Horses from Northern Europe ten to be adapted to climates that are damp, wet, and somewhat cold. Southern European horses tend to be more athletic and lean, ready to tackle the year-round chores that a more temperate climate allows.
Some superstitions believe that the placement of coat whirls or colors is an indication of what the owner’s luck will be or what the temperament of the horse will be. There are several subtypes within this breed that are accepted, ranging from the Cor lay to the Heavy Draft, and is based on the size of the horse.
The Breton is also one of the few draft horses that were not improved through crossbreeding in the early 1900s, making it one of the purest breeds of its type today. Smaller Breton's are used under saddle and complete light draft work or compete in events.
Originating in Scotland, its fame is largely due to the Budweiser brand including a herd of this draft horse as part of their marketing efforts. This is because breed associations have long paid close attention to the quality of the legs, hooves, and the general movement of the horse.
The feathering below the knee is one of the trademarks of this breed, which can require extensive care because of the amount of moisture they can trap. Fewer than 5,000 Clydesdale's are believed to exist globally, with 80% of them living in North America.
Originating in the Netherlands, this breed is one of the most nimble and graceful horses in the equine world today. Their long-flowing mane and tail create optics that make it virtually impossible not to love horses.
White markings are rare and only a small star on the forehead is allowed by the registry. Developed in Italy and Austria during the latter half of the 19th century, this breed is relatively small and always chestnut.
All purebred Harbingers can trace their ancestry back to the original foundation sire through 1 of 7 established bloodlines. It is a very athletic horse, comparable to many Thoroughbreds, but it also has a superior level of agility that allows it to perform in many sporting events.
You’ll often find Hanoverian's competing in English riding styles that are competitive, dressage, and sport jumping in addition to traditional racing events. It was originally a carriage horse and was often used for farm work, but was adapted to sporting needs after a shift in demand occurred after the second world war.
Developed exclusively in Iceland, this is one of the most protected horse breeds in the world today. Originally developed because of Norse settlers who migrated to Iceland as early as the 9th century, the breed has been mentioned in local literature for almost 1,000 years.
It is a breed that has a large personality, a spirited temperament, and an incredible ability to carry weight. This horse breed is closely associated with a specific riding school in Austria.
This horse breed is highly intelligent, so it can learn intricate movements and stylized jumps with relative ease. There are just 8 stallions that are recognized as the foundation bloodstock of the modern breed and all of them were foaled in the late 18th or early 19th century.
Developed in Lower Saxony, this breed is a tall sport horse that has a world-renown jumping ability. There are liberal pedigree requirements for the breed, including exclusive use of privately owned stallions instead of a restricted studbook from a state-owned farm.
Although most horses are brown, black, chestnut, bay, or gray, virtually any coat color is considered to be acceptable. Image credit: Panel Uchorczak/Shutterstock It is commonly believed that horses are native to the European lands, when in reality, their ancestors came over from the Americas via the Bering Bridge 1 million years ago.
Horses agility and intelligence contributes to their pest-like behavior of consuming crops in large amounts, which is unfavorable to farmers. As the only method for transportation, their purpose was also to help with carrying loads for settlements and to trade with the Indigenous peoples.
The name Phipps was given to the earliest species by Thomas Henry Huxley, an English biologist and anthropologist who specialized in comparative anatomy, upon his visit to the United States in 1876. Literally meaning “dawn horse,” Phipps was described as a “timid forest animal” standing at about 13 inches tall, with a hunched back, leopard-like spots, and four toes on each foot.
Having acquired an additional tooth for grinding to feed on tough plants, it also presented itself with a sturdier body. It not only looked like today's, with its elongated snout and long legs (albeit still with three toes), but it also demonstrated agility and intelligence through its ability to escape and out-trick other species as well as humans who made attempts a domesticating the Merrychipus.
Equus managed to make its way through Alaska into Siberia via the Bering Bridge, about 1,000,000 years ago, spreading by land through Asia and Europe all the way to Africa. Although it remains uncertain why they went extinct on these lands, evidence suggests that humans might have had something to do with it, as they first made their way to the Americas from Siberia by crossing the Bering Strait around that time.
The other two theories state that infectious disease and climate change with a consecutive decline in vegetation might have also been the contributing factors. A little-known fact is that horses, wild horses specifically, can be regarded as pests, as they are capable of consuming large amounts of land resources at a time, including feed for farmers' cattle and the products that farmers grow themselves, such as cabbage, carrots and leafy greens.
Horse Scientific classification Kingdom: Animalia Phylum: Chordata Class: Mammalian Order: Perissodactyla Family: Equine Genus: Equus Species: Subspecies: Trinomial name Equus ferns Catullus Synonyms The horse (Equus ferns Catullus) is one of two extant subspecies of Equus ferns. It is an odd-toed ungulate mammal belonging to the taxonomic family Equine.
The horse has evolved over the past 45 to 55 million years from a small multi-toed creature, Phipps, into the large, single-toed animal of today. Horses in the subspecies Catullus are domesticated, although some domesticated populations live in the wild as feral horses.
There is an extensive, specialized vocabulary used to describe equine-related concepts, covering everything from anatomy to life stages, size, colors, markings, breeds, locomotion, and behavior. Horses are adapted to run, allowing them to quickly escape predators, possessing an excellent sense of balance and a strong fight-or-flight response.
Related to this need to flee from predators in the wild is an unusual trait: horses are able to sleep both standing up and lying down, with younger horses tending to sleep significantly more than adults. Female horses, called mares, carry their young for approximately 11 months, and a young horse, called a foal, can stand and run shortly following birth.
Most domesticated horses begin training under a saddle or in a harness between the ages of two and four. They reach full adult development by age five, and have an average lifespan of between 25 and 30 years.
Horse breeds are loosely divided into three categories based on general temperament: spirited “hot bloods” with speed and endurance; “cold bloods”, such as draft horses and some ponies, suitable for slow, heavy work; and warm bloods “, developed from crosses between hot bloods and cold bloods, often focusing on creating breeds for specific riding purposes, particularly in Europe. There are more than 300 breeds of horse in the world today, developed for many uses.
Horses and humans interact in a wide variety of sport competitions and non-competitive recreational pursuits, as well as in working activities such as police work, agriculture, entertainment, and therapy. Horses were historically used in warfare, from which a wide variety of riding and driving techniques developed, using many styles of equipment and methods of control.
Many products are derived from horses, including meat, milk, hide, hair, bone, and pharmaceuticals extracted from the urine of pregnant mares. Humans provide domesticated horses with food, water, and shelter, as well as attention from specialists such as veterinarians and farriers.
Specific terms and specialized language are used to describe equine anatomy, different life stages, and colors and breeds. Depending on breed, management and environment, the modern domestic horse has a life expectancy of 25 to 30 years.
Uncommonly, a few animals live into their 40s and, occasionally, beyond. The oldest verifiable record was Old Billy “, a 19th-century horse that lived to the age of 62.
In modern times, Sugar Puff, who had been listed in Guinness World Records as the world's oldest living pony, died in 2007 at age 56. Regardless of a horse or pony's actual birthdate, for most competition purposes a year is added to its age each January 1 of each year in the Northern Hemisphere and each August 1 in the Southern Hemisphere.
The exception is in endurance riding, where the minimum age to compete is based on the animal's actual calendar age. Most domesticated foals are weaned at five to seven months of age, although foals can be weaned at four months with no adverse physical effects.
Colt : A male horse under the age of four. A common terminology error is to call any young horse a “colt”, when the term actually only refers to young male horses.
Stallion : A non-castrated male horse four years old and older. The term “horse” is sometimes used colloquially to refer specifically to a stallion.
Gelding : A castrated male horse of any age. In horse racing, these definitions may differ: For example, in the British Isles, Thoroughbred horse racing defines colts and fillies as less than five years old.
However, Australian Thoroughbred racing defines colts and fillies as less than four years old. The height of horses is measured at the highest point of the withers, where the neck meets the back.
This point is used because it is a stable point of the anatomy, unlike the head or neck, which move up and down in relation to the body of the horse. In English-speaking countries, the height of horses is often stated in units of hands and inches: one hand is equal to 4 inches (101.6 mm).
The height is expressed as the number of full hands, followed by a point, then the number of additional inches, and ending with the abbreviation “h” or “HH” (for “hands high”). Light riding horses usually range in height from 14 to 16 hands (56 to 64 inches, 142 to 163 cm) and can weigh from 380 to 550 kilograms (840 to 1,210 lb).
Larger riding horses usually start at about 15.2 hands (62 inches, 157 cm) and often are as tall as 17 hands (68 inches, 173 cm), weighing from 500 to 600 kilograms (1,100 to 1,320 lb). Heavy or draft horses are usually at least 16 hands (64 inches, 163 cm) high and can be as tall as 18 hands (72 inches, 183 cm) high.
He stood 21.2 1 4 hands (86.25 inches, 219 cm) high and his peak weight was estimated at 1,524 kilograms (3,360 lb). The current record holder for the world's smallest horse is Tumbling, a fully mature miniature horse affected by dwarfism.
She is 17 in (43 cm) tall and weighs 57 lb (26 kg). The distinction between a horse and pony is commonly drawn on the basis of height, especially for competition purposes.
However, height alone is not dispositive; the difference between horses and ponies may also include aspects of phenotype, including conformation and temperament. The traditional standard for height of a horse or a pony at maturity is 14.2 hands (58 inches, 147 cm).
An animal 14.2 h or over is usually considered to be a horse and one less than 14.2 h a pony, but there are many exceptions to the traditional standard. In Australia, ponies are considered to be those under 14 hands (56 inches, 142 cm).
For competition in the Western division of the United States Equestrian Federation, the cutoff is 14.1 hands (57 inches, 145 cm). The International Federation for Equestrian Sports, the world governing body for horse sport, uses metric measurements and defines a pony as being any horse measuring less than 148 centimeters (58.27 in) at the withers without shoes, which is just over 14.2 h, and 149 centimeters (58.66 in), or just over 14.2 1 2 h, with shoes.
Height is not the sole criterion for distinguishing horses from ponies. Breed registries for horses that typically produce individuals both under and over 14.2 h consider all animals of that breed to be horses regardless of their height.
Conversely, some pony breeds may have features in common with horses, and individual animals may occasionally mature at over 14.2 h, but are still considered to be ponies. Ponies often exhibit thicker manes, tails, and overall coat.
They also have proportionally shorter legs, wider barrels, heavier bone, shorter and thicker necks, and short heads with broad foreheads. They may have calmer temperaments than horses and also a high level of intelligence that may or may not be used to cooperate with human handlers.
Conversely, breeds such as the Flagella and other miniature horses, which can be no taller than 30 inches (76 cm), are classified by their registries as very small horses, not ponies. Bay (left) and chestnut (sometimes called “sorrel”) are two of the most common coat colors, seen in almost all breeds.
Horses exhibit a diverse array of coat colors and distinctive markings, described by a specialized vocabulary. Often, a horse is classified first by its coat color, before breed or sex.
Horses of the same color may be distinguished from one another by white markings, which, along with various spotting patterns, are inherited separately from coat color. Many genes that create horse coat colors and patterns have been identified.
Current genetic tests can identify at least 13 different alleles influencing coat color, and research continues to discover new genes linked to specific traits. The basic coat colors of chestnut and black are determined by the gene controlled by the Melanocortin 1 receptor, also known as the “extension gene” or “red factor,” as its recessive form is “red” (chestnut) and its dominant form is black.
Additional genes control suppression of black color to point coloration that results in a bay, spotting patterns such as pinto or leopard, dilution genes such as palomino or dun, as well as graying, and all the other factors that create the many possible coat colors found in horses. Grays are born a darker shade, get lighter as they age, but usually keep black skin underneath their white hair coat (except pink skin under white markings).
The only horses properly called white are born with a predominantly white hair coat and pink skin, a fairly rare occurrence. Different and unrelated genetic factors can produce white coat colors in horses, including several alleles of dominant white and the sabino-1 gene.
However, there are no albino horses, defined as having both pink skin and red eyes. Gestation lasts approximately 340 days, with an average range 320–370 days, and usually results in one foal ; twins are rare.
Horses are a precocity species, and foals are capable of standing and running within a short time following birth. The estrous cycle of a mare occurs roughly every 19–22 days and occurs from early spring into autumn.
Foals are generally weaned from their mothers between four and six months of age. Horses, particularly colts, sometimes are physically capable of reproduction at about 18 months, but domesticated horses are rarely allowed to breed before the age of three, especially females.
Horses four years old are considered mature, although the skeleton normally continues to develop until the age of six; maturation also depends on the horse's size, breed, sex, and quality of care. These plates convert after the other parts of the bones, and are crucial to development.
Depending on maturity, breed, and work expected, horses are usually put under saddle and trained to be ridden between the ages of two and four. Although Thoroughbred race horses are put on the track as young as the age of two in some countries, horses specifically bred for sports such as dressage are generally not put under saddle until they are three or four years old, because their bones and muscles are not solidly developed.
For endurance riding competition, horses are not deemed mature enough to compete until they are a full 60 calendar months (five years) old. Skeletal system The skeletal system of a modern horseshoe horse skeleton averages 205 bones.
Their leg bones are proportioned differently from those of a human. For example, the body part that is called a horse's “knee” is actually made up of the carpal bones that correspond to the human wrist.
Similarly, the hock contains bones equivalent to those in the human ankle and heel. The lower leg bones of a horse correspond to the bones of the human hand or foot, and the fetlock (incorrectly called the “ankle”) is actually the proximal sesamoid bones between the cannon bones (a single equivalent to the human metacarpal or metatarsal bones) and the proximal phalanges, located where one finds the “knuckles” of a human.
A horse also has no muscles in its legs below the knees and hocks, only skin, hair, bone, tendons, ligaments, cartilage, and the assorted specialized tissues that make up the hoof. Hooves The critical importance of the feet and legs is summed up by the traditional adage, “no foot, no horse”.
The horse hoof begins with the distal phalanges, the equivalent of the human fingertip or tip of the toe, surrounded by cartilage and other specialized, blood-rich soft tissues such as the laminae. The exterior hoof wall and horn of the sole is made of keratin, the same material as a human fingernail.
The end result is that a horse, weighing on average 500 kilograms (1,100 lb), travels on the same bones as would a human on tiptoe. For the protection of the hoof under certain conditions, some horses have horseshoes placed on their feet by a professional farrier.
The hoof continually grows, and in most domesticated horses needs to be trimmed (and horseshoes reset, if used) every five to eight weeks, though the hooves of horses in the wild wear down and regrow at a rate suitable for their terrain. In an adult horse, there are 12 incisors at the front of the mouth, adapted to biting off the grass or other vegetation.
There are 24 teeth adapted for chewing, the premolars and molars, at the back of the mouth. Stallions and geldings have four additional teeth just behind the incisors, a type of canine teeth called “tushes”.
Some horses, both male and female, will also develop one to four very small vestigial teeth in front of the molars, known as “wolf” teeth, which are generally removed because they can interfere with the bit. There is an empty interdental space between the incisors and the molars where the bit rests directly on the gums, or “bars” of the horse's mouth when the horse is bridled.
An estimate of a horse's age can be made from looking at its teeth. The teeth continue to erupt throughout life and are worn down by grazing.
Therefore, the incisors show changes as the horse ages; they develop a distinct wear pattern, changes in tooth shape, and changes in the angle at which the chewing surfaces meet. This allows a very rough estimate of a horse's age, although diet and veterinary care can also affect the rate of tooth wear.
Digestion Horses are herbivores with a digestive system adapted to a forage diet of grasses and other plant material, consumed steadily throughout the day. Therefore, compared to humans, they have a relatively small stomach but very long intestines to facilitate a steady flow of nutrients.
A 450-kilogram (990 lb) horse will eat 7 to 11 kilograms (15 to 24 lb) of food per day and, under normal use, drink 38 to 45 liters (8.4 to 9.9 imp gal; 10 to 12 US gal) of water. Horses are not ruminants, they have only one stomach, like humans, but unlike humans, they can utilize cellulose, a major component of grass.
Cellulose fermentation by symbiotic bacteria occurs in the cecum, or “water gut”, which food goes through before reaching the large intestine. Horses cannot vomit, so digestion problems can quickly cause colic, a leading cause of death.
Senses The horses senses are based on their status as prey animals, where they must be aware of their surroundings at all times. Their sense of smell, while much better than that of humans, is not quite as good as that of a dog.
It is believed to play a key role in the social interactions of horses as well as detecting other key scents in the environment. The first system is in the nostrils and nasal cavity, which analyze a wide range of odors.
These have a separate nerve pathway to the brain and appear to primarily analyze pheromones. A horse's hearing is good, and the Penna of each ear can rotate up to 180°, giving the potential for 360° hearing without having to move the head.
Noise impacts the behavior of horses and certain kinds of noise may contribute to stress: A 2013 study in the UK indicated that stabled horses were calmest in a quiet setting, or if listening to country or classical music, but displayed signs of nervousness when listening to jazz or rock music. This study also recommended keeping music under a volume of 21 decibels.
The most sensitive areas are around the eyes, ears, and nose. Horses are able to sense contact as subtle as an insect landing anywhere on the body.
Horses have an advanced sense of taste, which allows them to sort through fodder and choose what they would most like to eat, and their prehensile lips can easily sort even small grains. Horses generally will not eat poisonous plants, however, there are exceptions; horses will occasionally eat toxic amounts of poisonous plants even when there is adequate healthy food.
All horses move naturally with four basic gaits : the four-beat walk, which averages 6.4 kilometers per hour (4.0 mph); the two-beat trot or jog at 13 to 19 kilometers per hour (8.1 to 11.8 mph) (faster for harness racing horses); the canter or lope, a three-beat gait that is 19 to 24 kilometers per hour (12 to 15 mph); and the gallop. The gallop averages 40 to 48 kilometers per hour (25 to 30 mph), but the world record for a horse galloping over a short, sprint distance is 70.76 kilometers per hour (43.97 mph).
Besides these basic gaits, some horses perform a two-beat pace, instead of the trot. There also are several four-beat ambling gaits that are approximately the speed of a trot or pace, though smoother to ride.
These include the lateral rack, running walk, and told as well as the diagonal fox trot. Horses are prey animals with a strong fight-or-flight response.
Their first reaction to a threat is to startle and usually flee, although they will stand their ground and defend themselves when flight is impossible or if their young are threatened. They also tend to be curious; when startled, they will often hesitate an instant to ascertain the cause of their fright, and may not always flee from something that they perceive as non-threatening.
Most light horse riding breeds were developed for speed, agility, alertness and endurance; natural qualities that extend from their wild ancestors. Horses are herd animals, with a clear hierarchy of rank, led by a dominant individual, usually a mare.
They are also social creatures that are able to form companionship attachments to their own species and to other animals, including humans. They communicate in various ways, including vocalizations such as nickering or whinnying, mutual grooming, and body language.
However, when confined with insufficient companionship, exercise, or stimulation, individuals may develop stable vices, an assortment of bad habits, mostly stereotypes of psychological origin, that include wood chewing, wall kicking, “weaving” (rocking back and forth), and other problems. Intelligence and learning Domesticated horses may face greater mental challenges than wild horses, because they live in artificial environments that prevent instinctive behavior whilst also learning tasks that are not natural.
One trainer believes that “intelligent” horses are reflections of intelligent trainers who effectively use response conditioning techniques and positive reinforcement to train in the style that best fits with an individual animal's natural inclinations. Temperament Horses are mammals, and as such are warm-blooded, or endothermic creatures, as opposed to cold-blooded, or poikilothermic animals.
However, these words have developed a separate meaning in the context of equine terminology, used to describe temperament, not body temperature. For example, the “hot-bloods”, such as many race horses, exhibit more sensitivity and energy, while the “cold-bloods”, such as most draft breeds, are quieter and calmer.
Illustration of assorted breeds; slim, light hot bloods, medium-sized warm bloods and draft and pony-type cold blood breeds”Hot blooded” breeds include oriental horses such as the Akhal-Teke, Arabian horse, Barb and now-extinct Turbofan horse, as well as the Thoroughbred, a breed developed in England from the older oriental breeds. Hot bloods tend to be spirited, bold, and learn quickly.
The original oriental breeds were brought to Europe from the Middle East and North Africa when European breeders wished to infuse these traits into racing and light cavalry horses. Muscular, heavy draft horses are known as “cold bloods”, as they are bred not only for strength, but also to have the calm, patient temperament needed to pull a plow or a heavy carriage full of people.
Well-known draft breeds include the Belgian and the Clydesdale. Some, like the Percheron, are lighter and livelier, developed to pull carriages or to plow large fields in drier climates.
Others, such as the Shire, are slower and more powerful, bred to plow fields with heavy, clay-based soils. “ Warm blood breeds, such as the Takeover or Hanoverian, developed when European carriage and war horses were crossed with Arabians or Thoroughbreds, producing a riding horse with more refinement than a draft horse, but greater size and milder temperament than a lighter breed.
Certain pony breeds with warm blood characteristics have been developed for smaller riders. Sleep patterns When horses lie down to sleep, others in the herd remain standing, awake or in a light doze, keeping watch.
In an adaptation from life in the wild, horses are able to enter light sleep by using a stay apparatus in their legs, allowing them to doze without collapsing. A horse kept alone will not sleep well because its instincts are to keep a constant eye out for danger.
Unlike humans, horses do not sleep in a solid, unbroken period of time, but take many short periods of rest. Horses spend four to fifteen hours a day in standing rest, and from a few minutes to several hours lying down.
Total sleep time in a 24-hour period may range from several minutes to a couple of hours, mostly in short intervals of about 15 minutes each. The average sleep time of a domestic horse is said to be 2.9 hours per day.
Horses must lie down to reach REM sleep. They only have to lie down for an hour or two every few days to meet their minimum REM sleep requirements.
However, if a horse is never allowed to lie down, after several days it will become sleep-deprived, and in rare cases may suddenly collapse as it involuntarily slips into REM sleep while still standing. This condition differs from narcolepsy, although horses may also suffer from that disorder.
From left to right: Size development, biometrical changes in the cranium, reduction of toes (left forefoot)The horse adapted to survive in areas of wide-open terrain with sparse vegetation, surviving in an ecosystem where other large grazing animals, especially ruminants, could not. Horses and other equips are odd-toed ungulates of the order Perissodactyla, a group of mammals that was dominant during the Tertiary period.
The extra toe on the front feet soon disappeared with the Mesohippus, which lived 32 to 37 million years ago. Over time, the extra side toes shrank in size until they vanished.
All that remains of them in modern horses is a set of small vestigial bones on the leg below the knee, known informally as splint bones. Their legs also lengthened as their toes disappeared until they were a hooked animal capable of running at great speed.
By about 5 million years ago, the modern Equus had evolved. Equip teeth also evolved from browsing on soft, tropical plants to adapt to browsing of drier plant material, then to grazing of tougher plains grasses.
Thus, photo- horses changed from leaf-eating forest-dwellers to grass-eating inhabitants of semi-arid regions worldwide, including the steppes of Eurasia and the Great Plains of North America. By about 15,000 years ago, Equus ferns was a widespread Arctic species.
Horse bones from this time period, the late Pleistocene, are found in Europe, Eurasia, Bering, and North America. Yet between 10,000 and 7,600 years ago, the horse became extinct in North America and rare elsewhere.
The reasons for this extinction are not fully known, but one theory notes that extinction in North America paralleled human arrival. Another theory points to climate change, noting that approximately 12,500 years ago, the grasses characteristic of a steppe ecosystem gave way to shrub tundra, which was covered with unpalatable plants.
A small herd of Przewalski's Horses A truly wild horse is a species or subspecies with no ancestors that were ever domesticated. Therefore, most “wild” horses today are actually feral horses, animals that escaped or were turned loose from domestic herds and the descendants of those animals.
The Przewalski's horse (Equus ferns przewalskii), named after the Russian explorer Nikolai Przhevalsky, is a rare Asian animal. It is also known as the Mongolian wild horse; Mongolian people know it as the take, and the Kerry people call it a airbag.
The subspecies was presumed extinct in the wild between 1969 and 1992, while a small breeding population survived in zoos around the world. In 1992, it was reestablished in the wild due to the conservation efforts of numerous zoos.
Today, a small wild breeding population exists in Mongolia. There are additional animals still maintained at zoos throughout the world.
The Tarzan or European wild horse (Equus ferus) was found in Europe and much of Asia. It survived into the historical era, but became extinct in 1909, when the last captive died in a Russian zoo.
Attempts to have been made to recreate the Tarzan, which resulted in horses with outward physical similarities, but nonetheless descended from domesticated ancestors and not true wild horses. Periodically, populations of horses in isolated areas are speculated to be relict populations of wild horses, but generally have been proven to be feral or domestic.
For example, the Roche horse of Tibet was proposed as such, but testing did not reveal genetic differences from domesticated horses. Similarly, the Sorrier of Portugal was proposed as a direct descendant of the Tarzan based on shared characteristics, but genetic studies have shown that the Sorrier is more closely related to other horse breeds and that the outward similarity is an unreliable measure of relatedness.
The most common hybrid is the mule, a cross between a “jack” (male donkey) and a mare. A related hybrid, a Ginny, is a cross between a stallion and a jenny (female donkey).
Other hybrids include the horse, a cross between a zebra and a horse. With rare exceptions, most hybrids are sterile and cannot reproduce.
Bhimbetka rock painting showing a man riding on a horse, IndiaDomestication of the horse most likely took place in Central Asia prior to 3500 BC. Two major sources of information are used to determine where and when the horse was first domesticated and how the domesticated horse spread around the world.
The first source is based on pathological and archaeological discoveries; the second source is a comparison of DNA obtained from modern horses to that from bones and teeth of ancient horse remains. The earliest archaeological evidence for the domestication of the horse comes from sites in Ukraine and Kazakhstan, dating to approximately 3500–4000 BC.
By 3000 BC, the horse was completely domesticated and by 2000 BC there was a sharp increase in the number of horse bones found in human settlements in northwestern Europe, indicating the spread of domesticated horses throughout the continent. The most recent, but most irrefutable evidence of domestication comes from sites where horse remains were interred with chariots in graves of the Sintashta and Petrov cultures c. 2100 BC.
Domestication is also studied by using the genetic material of present-day horses and comparing it with the genetic material present in the bones and teeth of horse remains found in archaeological and pathological excavations. The variation in the genetic material shows that very few wild stallions contributed to the domestic horse, while many mares were part of early domesticated herds.
This is reflected in the difference in genetic variation between the DNA that is passed on along the paternal, or sire line (Y-chromosome) versus that passed on along the maternal, or dam line (mitochondrial DNA). There are very low levels of Y-chromosome variability, but a great deal of genetic variation in mitochondrial DNA.
There is also regional variation in mitochondrial DNA due to the inclusion of wild mares in domestic herds. Another characteristic of domestication is an increase in coat color variation.
In horses, this increased dramatically between 5000 and 3000 BC. Before the availability of DNA techniques to resolve the questions related to the domestication of the horse, various hypotheses were proposed.
One classification was based on body types and conformation, suggesting the presence of four basic prototypes that had adapted to their environment prior to domestication. Another hypothesis held that the four prototypes originated from a single wild species and that all different body types were entirely a result of selective breeding after domestication.
However, the lack of a detectable substructure in the horse has resulted in a rejection of both hypotheses. Feral horses are born and live in the wild, but are descended from domesticated animals.
Many populations of feral horses exist throughout the world. Studies of feral herds have provided useful insights into the behavior of prehistoric horses, as well as greater understanding of the instincts and behaviors that drive horses that live in domesticated conditions.
There are also semi-feral horses in many parts of the world, such as Dartmoor and the New Forest in the UK, where the animals are all privately owned but live for significant amounts of time in “wild” conditions on undeveloped, often public, lands. Owners of such animals often pay a fee for grazing rights.
The concept of purebred bloodstock and a controlled, written breed registry has come to be particularly significant and important in modern times. Sometimes purebred horses are incorrectly or inaccurately called “thoroughbreds”.
Thoroughbred is a specific breed of horse, while a “purebred” is a horse (or any other animal) with a defined pedigree recognized by a breed registry. Horse breeds are groups of horses with distinctive characteristics that are transmitted consistently to their offspring, such as conformation, color, performance ability, or disposition.
These inherited traits result from a combination of natural crosses and artificial selection methods. An early example of people who practiced selective horse breeding were the Bedouin, who had a reputation for careful practices, keeping extensive pedigrees of their Arabian horses and placing great value upon pure bloodlines.
These pedigrees were originally transmitted via an oral tradition. In the 14th century, Cartesian monks of southern Spain kept meticulous pedigrees of bloodstock lineages still found today in the Andalusian horse.
Breeds developed due to a need for “form to function”, the necessity to develop certain characteristics in order to perform a particular type of work. Thus, a powerful but refined breed such as the Andalusian developed as riding horses with an aptitude for dressage.
Heavy draft horses were developed out of a need to perform demanding farm work and pull heavy wagons. Other horse breeds had been developed specifically for light agricultural work, carriage and road work, various sport disciplines, or simply as pets.
Some breeds developed through centuries of crossing other breeds, while others descended from a single foundation sire, or other limited or restricted foundation bloodstock. One of the earliest formal registries was General Stud Book for Thoroughbreds, which began in 1791 and traced back to the foundation bloodstock for the breed.
Worldwide, horses play a role within human cultures and have done so for millennia. Horses are used for leisure activities, sports, and working purposes.
The Food and Agriculture Organization (FAO) estimates that in 2008, there were almost 59,000,000 horses in the world, with around 33,500,000 in the Americas, 13,800,000 in Asia and 6,300,000 in Europe and smaller portions in Africa and Oceania. The American Horse Council estimates that horse-related activities have a direct impact on the economy of the United States of over $39 billion, and when indirect spending is considered, the impact is over $102 billion.
In a 2004 “poll” conducted by Animal Planet, more than 50,000 viewers from 73 countries voted for the horse as the world's 4th favorite animal. Communication between human and horse is paramount in any equestrian activity; to aid this process horses are usually ridden with a saddle on their backs to assist the rider with balance and positioning, and a bridle or related headgear to assist the rider in maintaining control.
Many horses are also driven, which requires a harness, bridle, and some type of vehicle. Historically, equestrians honed their skills through games and races.
Equestrian sports provided entertainment for crowds and honed the excellent horsemanship that was needed in battle. Many sports, such as dressage, evening and show jumping, have origins in military training, which were focused on control and balance of both horse and rider.
Other sports, such as rodeo, developed from practical skills such as those needed on working ranches and stations. Horse racing of all types evolved from impromptu competitions between riders or drivers.
All forms of competition, requiring demanding and specialized skills from both horse and rider, resulted in the systematic development of specialized breeds and equipment for each sport. The popularity of equestrian sports through the centuries has resulted in the preservation of skills that would otherwise have disappeared after horses stopped being used in combat.
Horses are trained to be ridden or driven in a variety of sporting competitions. Examples include show jumping, dressage, three-day evening, competitive driving, endurance riding, gymkhana, rodeos, and fox hunting.
Horse shows, which have their origins in medieval European fairs, are held around the world. They host a huge range of classes, covering all the mounted and harness disciplines, as well as “In-hand” classes where the horses are led, rather than ridden, to be evaluated on their conformation.
The method of judging varies with the discipline, but winning usually depends on style and ability of both horse and rider. Sports such as polo do not judge the horse itself, but rather use the horse as a partner for human competitors as a necessary part of the game.
Horse racing is an equestrian sport and major international industry, watched in almost every nation of the world. There are three types: “flat” racing; steeple chasing, i.e. racing over jumps; and harness racing, where horses trot or pace while pulling a driver in a small, light cart known as a sulky.
A major part of horse racing's economic importance lies in the gambling associated with it. There are certain jobs that horses do very well, and no technology has yet developed to fully replace them.
For example, mounted police horses are still effective for certain types of patrol duties and crowd control. Cattle ranches still require riders on horseback to round up cattle that are scattered across remote, rugged terrain.
Search and rescue organizations in some countries depend upon mounted teams to locate people, particularly hikers and children, and to provide disaster relief assistance. Horses can also be used in areas where it is necessary to avoid vehicular disruption to delicate soil, such as nature reserves.
They may also be the only form of transport allowed in wilderness areas. Law enforcement officers such as park rangers or game wardens may use horses for patrols, and horses or mules may also be used for clearing trails or other work in areas of rough terrain where vehicles are less effective.
Although machinery has replaced horses in many parts of the world, an estimated 100 million horses, donkeys and mules are still used for agriculture and transportation in less developed areas. This number includes around 27 million working animals in Africa alone.
Some land management practices such as cultivating and logging can be efficiently performed with horses. In agriculture, less fossil fuel is used and increased environmental conservation occurs over time with the use of draft animals such as horses.
Logging with horses can result in reduced damage to soil structure and less damage to trees due to more selective logging. The first archaeological evidence of horses used in warfare dates to between 4000 and 3000 BC, and the use of horses in warfare was widespread by the end of the Bronze Age.
Although mechanization has largely replaced the horse as a weapon of war, horses are still seen today in limited military uses, mostly for ceremonial purposes, or for reconnaissance and transport activities in areas of rough terrain where motorized vehicles are ineffective. Horses have been used in the 21st century by the Janjaweed militias in the War in Darfur.
The horse-headed deity in Hinduism, Hayagriva Modern horses are often used to reenact many of their historical work purposes. Horses are used, complete with equipment that is authentic or a meticulously recreated replica, in various live action historical reenactments of specific periods of history, especially recreations of famous battles.
Horses are also used to preserve cultural traditions and for ceremonial purposes. Countries such as the United Kingdom still use horse-drawn carriages to convey royalty and other VIPs to and from certain culturally significant events.
Public exhibitions are another example, such as the Budweiser Clydesdale's, seen in parades and other public settings, a team of draft horses that pull a beer wagon similar to that used before the invention of the modern motorized truck. Horses are frequently used in television, films and literature.
They are sometimes featured as a major character in films about particular animals, but also used as visual elements that assure the accuracy of historical stories. The horse frequently appears in coats of arms in heraldry, in a variety of poses and equipment.
The mythologies of many cultures, including Greco-Roman, Hindu, Islamic, and Norse, include references to both normal horses and those with wings or additional limbs, and multiple myths also call upon the horse to draw the chariots of the Moon and Sun. People of all ages with physical and mental disabilities obtain beneficial results from an association with horses.
Therapeutic riding is used to mentally and physically stimulate disabled persons and help them improve their lives through improved balance and coordination, increased self-confidence, and a greater feeling of freedom and independence. The benefits of equestrian activity for people with disabilities has also been recognized with the addition of equestrian events to the Paralympic Games and recognition of para-equestrian events by the International Federation for Equestrian Sports (FEI).
Hippo therapy and therapeutic horseback riding are names for different physical, occupational, and speech therapy treatment strategies that utilize equine movement. In hippo therapy, a therapist uses the horse's movement to improve their patient's cognitive, coordination, balance, and fine motor skills, whereas therapeutic horseback riding uses specific riding skills.
Horses also provide psychological benefits to people whether they actually ride or not. “Equine-assisted” or “equine-facilitated” therapy is a form of experiential psychotherapy that uses horses as companion animals to assist people with mental illness, including anxiety disorders, psychotic disorders, mood disorders, behavioral difficulties, and those who are going through major life changes.
There are also experimental programs using horses in prison settings. Exposure to horses appears to improve the behavior of inmates and help reduce recidivism when they leave.
Products collected from living horses include mare's milk, used by people with large horse herds, such as the Mongols, who let it ferment to produce Luis. Horse blood was once used as food by the Mongols and other nomadic tribes, who found it a convenient source of nutrition when traveling.
Drinking their own horses blood allowed the Mongols to ride for extended periods of time without stopping to eat. The drug Remain is a mixture of estrogens extracted from the urine of pregnant mares (pregnant ma res' your in e), and was previously a widely used drug for hormone replacement therapy.
The tail hair of horses can be used for making bows for string instruments such as the violin, viola, cello, and double bass. Horse meat has been used as food for humans and carnivorous animals throughout the ages.
Approximately 5 million horses are slaughtered each year for meat worldwide. It is eaten in many parts of the world, though consumption is taboo in some cultures, and a subject of political controversy in others.
Horse hooves can also be used to produce animal glue. Specifically, in Italian cuisine, the horse tibia is sharpened into a probe called a Shinto, which is used to test the readiness of a (pig) ham as it cures.
In Asia, the saga is a horsehide vessel used in the production of Luis. Checking teeth and other physical examinations are an important part of horse care.
Horses are grazing animals, and their major source of nutrients is good-quality forage from hay or pasture. They can consume approximately 2% to 2.5% of their body weight in dry feed each day.
Sometimes, concentrated feed such as grain is fed in addition to pasture or hay, especially when the animal is very active. When grain is fed, equine nutritionists recommend that 50% or more of the animal's diet by weight should still be forage.
Horses require a plentiful supply of clean water, a minimum of 10 US gallons (38 L) to 12 US gallons (45 L) per day. Although horses are adapted to live outside, they require shelter from the wind and precipitation, which can range from a simple shed or shelter to an elaborate stable.
Horses require routine hoof care from a farrier, as well as vaccinations to protect against various diseases, and dental examinations from a veterinarian or a specialized equine dentist. If horses are kept inside in a barn, they require regular daily exercise for their physical health and mental well-being.
When turned outside, they require well-maintained, sturdy fences to be safely contained. Regular grooming is also helpful to help the horse maintain good health of the hair coat and underlying skin.
System natural per Regina trial natural :second classes, or dines, genera, species, cum characterizes, differential, synonyms, Louis. Mammal Species of the World: A Taxonomic and Geographic Reference (3rd ed.).
“Usage of 17 specific names based on wild species which are predated by or contemporary with those based on domestic animals (Lepidoptera, Osteichthyes, Mammalian): conserved. Ministry of Agriculture, Food and Rural Affairs.
“World's Oldest Living Pony Dies at 56”. The Manual of Horsemanship of the British Horse Society and the Pony Club (6th edition, reprinted 1970 ed.).
^ a b “Equine Age Requirements for Arc Rides”. 101 of the Most Perplexing Questions Answered About Equine Enigmas, Medical Mysteries, and Befuddling Behaviors.
^ “Annex XVII: Extracts from Rules for Pony Riders and Children, 9th edition” (PDF). ^ For example, the Missouri Fox Trotter, or the Arabian horse.
52–63 ^ Cane, p. 200 ^ “Chromosome Numbers in Different Species”. ^ “Sequenced horse genome expands understanding of equine, human diseases”.
Cornell University College of Veterinary Medicine. Wade, C. M; Giotto, E; Sigurdsson, S; Zola, M; Genre, S; Island, F; Lear, T. L; Abelson, D. L; Bailey, E; Bell one, R. R; Blocker, H; Distal, O; Edgar, R. C; Garber, M; Lee, T; Marcel, E; MacLeod, J. N; Opened, M. C. T; Raisin, J. M; Sharpe, T; Vogel, J; Anderson, L; Amtrak, D. F; Big, T; Binds, M. M; Chaudhary, B. P; Coleman, S. J; Della Value, G; Fry, S; et al. (2009-11-05).
Maryland, L.; M. Johansson Miller; K. Sandberg; L. Anderson (1996). “A misses mutation in the gene for melanocyte-stimulating hormone receptor (MC1R) is associated with the chestnut coat color in horses “.
“Allele Heterogeneity at the Equine KIT Locus in Dominant White (W) Horses ". MAU, C.; Ponce, P. A.; Butcher, B.; Stranger, G.; Raider, S. (2004).
“Genetic mapping of dominant white (W), a homozygous lethal condition in the horse (Equus Catullus)”. “Rare Twin Foals Born at Vet Hospital: Twin Birth Occurrences Number One in Ten A Thousand”.
^ Bryant, Jennifer Olson; George Williams (2006). Horses Teeth and Their Problems: Prevention, Recognition, and Treatment.
Press Release, citing February 2010 Journal of Anatomy, Dr. Nathan Jeffery, co-author, University of Liverpool. Horse Safe: A Complete Guide to Equine Safety.
194–197 ^ a b Price, p. 15 ^ Bonging, entry 87 ^ Singer, pp. Conquerors: The Roots of New World Horsemanship (First ed.).
122–123 ^ Examples are the Australian Riding Pony and the Connemara, see Edwards, pp. The Lyons Press Horseman's Dictionary (Revised ed.).
“Evolution, Systematic, and Paleogeography of Pleistocene Horses in the New World: A Molecular Perspective”. “Widespread Origins of Domestic Horse Lineages” (PDF).
“Iberian Origins of New World Horse Breeds”. “Ancient DNA reveals late survival of mammoth and horse in interior Alaska”.
“A calendar chronology for Pleistocene mammoth and horse extinction in North America based on Bayesian radiocarbon calibration”. Boulder, CO: Roberts Richard Publishers.
^ “An extraordinary return from the brink of extinction for worlds last wild horse”. The Foundation for the Preservation and Protection of the Przewalski Horse.
Oregon couple revives prehistoric Tarzan horses ". Álvarez, I.; Beja-Pereira, A.; Molina, A.; Fernández, I.; Jordana, J.; Gómez, E.; Gutiérrez, J. P.; Gouache, F. (2005).
“The Origins of Iberian Horses Assessed via Mitochondrial DNA”. “Ancient DNA reveals traces of Iberian Neolithic and Bronze Age lineages in modern Iberian horses (PDF).
^ Outran, A. K.; Stare, N. A.; Kendra, R; Olsen, S; Kasparov, A; Albert, V; Thorpe, N; Ever shed, R. P. (2009). Shaping World History: Breakthroughs in Ecology, Technology, Science, and Politics.
^ “Horsey-aeology, Binary Black Holes, Tracking Red Tides, Fish Re-evolution, Walk Like a Man, Fact or Fiction”. Quirks and Quarks Podcast with Bob Macdonald.
“The emergence of Bronze Age chariots in Eastern Europe “. ^ a b LAU, A. N.; Peng, L.; Got, H.; Chem nick, L.; Ryder, O.
“Horse Domestication and Conservation Genetics of Przewalski's Horse Inferred from Sex Chromosomal and Autosomal Sequences”. ^ Lindgren, Gabriella; Nicolas Backstroke; June Swinburne; Linda Hellebore; Annika Einarsson; Key Sandberg; Gus Cochran; Charles Vila; Matthew Binds; Hans Allergen (2004).
^ a b c CAI, D. W.; Tang, Z. W.; Han, L.; Speller, C. F.; Yang, D. Y. Y.; Ma, X. L.; Can, J. E.; AHU, H.; Zhou, H.; et al. (2009). “Ancient DNA provides new insights into the origin of the Chinese domestic horse” (PDF).
“Early Horse Domestication: Weighing the Evidence”. In Olsen, Sandra L; Grant, Susan; Choke, Alice M.; Bartosiewicz, Laszlo (eds.).
“Domestication Features in Animals as Functions of Human Society”. ^ Ludwig, A.; Provost, M.; Weissmann, M.; Bedecked, N.; Brockman, G.A.
“Mares' Social Bonds Might Enhance Reproductive Success”. New Forest Drift: A Photographic Portrait of Life in the National Park.
376–377 ^ a b Edwards, p. 360 ^ Collins, Tony; Martin, John; Sample, Way (2005). Encyclopedia of Traditional British Rural Sports.
Newly, Monica; Diamond, Jared; Anthony, David (1999-11-13). “The Earliest Horseback Riding and its Relation to Charity and Warfare”.
^ “Frequently Asked Questions About Hippo therapy” (PDF). ^ “Equine Facilitated Psychotherapy (ESP) Fact Sheet”.
Keeping House: Women's Lives in Western Pennsylvania, 1790–1850. Bone, Antler, Ivory and Horn: Technology of Skeletal Materials Since the Roman Period.
Understanding the Ancient Secrets of the Horse's Mind. Nee nah, WI: Russell Meeting Company Ltd. ISBN 978-0-929346-65-6.
Probably when bison arrived in North America from Central Asia, about 10,000 BC, they ate the grass the horses needed. Then people probably hunted North American horses to extinction around 5600 BC.
History of horses : Earliest known spoked wheels, from a grave in western Siberia When the first people arrived in Central Asia, about a million years ago, they ate apples too.
When modern humans arrived, about 100,000 BC, they hunted horses for their meat and especially for their skins, to make into leather hides for clothes and for tents and tools. But around 4000 BC, people in Central Asia began to tame horses, to domesticate them, to eat them and to use them to carry things.
It was probably the Yamaha, living around the Caspian Sea in Central Asia, who first tamed horses for their own use. Soon the idea of using horses and wagons to carry people and stuff began to spread out of Central Asia.
By about 2500 BC, Sumerian people in West Asia were using horses and wagons. Horses could carry trade goods from one city to another, and they could pull wagons full of people or hay or wheat or pots from one place to another too.
By about 1200 BC, in the late Shang Dynasty, people in China were also using horses and chariots. Having tame horses made a big difference to people’s lives.
That made horses and chariots spread quickly around Asia, Europe, and North Africa. I was reading a recent article about wild horses and their origin in North America.
This article made me wonder if there were native horses in North America before the Spanish arrived. Forty-five million-year-old fossils of Phipps, the ancestor of the modern horse, evolved in North America, survived in Europe and Asia, and returned with the Spanish explorers.
The early horses went extinct in North America but made a come back in the 15th century. Quick links: Horses have played a significant role in the history of North America and throughout the world.
The evolution of horses in North America begins 60 million years ago with Phipps. It was a small animal, standing only 13 inches and had an arched back similar to some deer.
Their teeth indicate the Phipps was a roaming animal that sustained itself on foliage, like leaves and other plant foods. He had examined the collection of ancient fossils gathered from the Great Plains and the Rocky Mountains.
Mr. Huxley believed these fossils bolstered the theory of evolution, by tracing Phipps to the modern horse. It made its way on the scene with small developmental strides over Orohippu, with more grinding teeth, a more substantial body, and changes to its feet.
Dinohippus fossils have been found in North America and date from 13-5 million years ago. The stay mechanism allows horses to stand for extended periods without exerting much energy.
1-4 million years ago, Equus, the modern horse, debuted in North America. It is unclear precisely what caused the extinction of horses in North America, but there are three viable theories: human overkill, climate change, and infectious disease.
Humans crossed the Bering Sea and arrived in North America close to the time horses became extinct. Equus survived by crossing the Bering land bridge that connected Alaska to Siberia.
The Bering Strait land bridge allowed horses and other mammals to travel from Alaska’s northern slope when food supplies dwindled and return during times of abundance. When the Ice Age ended, sea levels rose to cut off animals’ natural food sources.
The flooding of the Bering Strait land bridge resulted in the extinction of many large mammals in North America. Infectious diseases could have been the cause of the rapid extinction of horses ; however, there is little science to support this theory.
Christopher Columbus is credited with bringing horses back to North America in 1493. Some horses escaped or were abandoned and populated large areas of the southwestern United States.
European settlers brought horses of varying breeds to North America. Horses flourished on the new continent, and they were used for transportation, ranch work, hauling freight, and farming.
They theorize the Native people subdued the wild Spanish horses in the mid 16th century. In the southwestern United States, a wealthy Spaniard established a settlement, which included livestock and horses.
Over some time, the Native American helpers recognized the value of horsemanship and learned how to handle horses. Horses were probably first ridden about 5,500 years ago on the plains of northern Kazakhstan, according to a 2009 study conducted by the University of Peter in the United Kingdom.
Archeologists uncovered evidence that indicates horses were selectively bred, used for milk, and possibly ridden. Through the use of new scientific techniques, the team of researchers confirmed bit damage caused by horses being harnessed or bridled.
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Today, wild horses inhabited two new nature reserves in Central Europe | European WILDLIFE Both localities are located in naturally waterlogged biodiverse landscapes in different parts of the Czech Republic.
The latter locality is of special importance as horses there are supposed to help maintain exceptionally preserved floodplain neadow-woodland mosaic ecosystem inhabited by beaver, Eurasian moose and numerous other protected species. In the areas surrounding the Baruch Pond, wild horses will mostly graze on extensive reed and cattail vegetation.
A total of eight wild horses were transferred to the locality in two transports from the former Milo vice military zone. They started grazing on the reeds, which they had no experience with from the Savannah-like landscape of the former military zone,” said Caliber Postal, Director of European Wildlife conservation organizations.
The meanders of the Luz nice with a network of paracetamols in these areas create suitable conditions for the natural plant community of the wetlands and grasslands. We are pleased that this type of care for the landscape continues to gain ground in Central Europe,” concluded Caliber Postal.
Although horses began appearing in cave art as early as 30,000 years ago, Paleolithic humans probably hunted them for their meat, a staple protein in Eurasia and later in North America. The earliest archaeological evidence of horses transition from prey to pets, unearthed several years ago at a site in Kazakhstan associated with the prehistoric Bowie culture, dates back to 3500 B.C.
This theory implies that horses were domesticated similarly to other modern livestock, such as cattle, sheep and goats, said Alessandro Chili, a geneticist at the University of Pa via in Italy. But when Chili and a team of fellow researchers collected maternally inherited mitochondrial genomes from living horses in Asia, Europe, the Middle East and the Americas, a strikingly different picture emerged.
“Taming these animals could generate the food surplus necessary to support the growth of human populations and the capability to expand and adapt into new environments or facilitate transportation.” “Now that many horse lineages have been defined, they could be easily employed not only to analyze other modern breeds, including thoroughbreds, but also to classify ancient remains,” he explained.
There are also wild horses living in some parts of the United States. These animals have evolved from small creatures to the large domesticated species we know today.