Horse breed in the context of "Pony"

The horse (Equus ferus caballus) is a domesticated, one-toed, hoofed mammal. It belongs to the taxonomic family Equidae and is one of two extant subspecies of Equus ferus. The horse has evolved over the past 45 to 55 million years from a small multi-toed creature, Eohippus, into the large single-toed animal of today, originally in North America. Humans began domesticating horses around 4000 BCE in Central Asia, and their domestication is believed to have been widespread by 3000 BCE. Horses in the subspecies caballus are domesticated, although some domesticated populations live in the wild as feral horses. These feral populations are not true wild horses, which are horses that have never been domesticated. 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, and possess a good 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.

The Clydesdale is a breed of draught horse which originated in the seventeenth century, and takes its name from the Clydesdale district of Scotland. The first recorded use of the name "Clydesdale" for the breed was in 1826; the horses spread through much of Scotland and into northern England. After the breed society was formed in 1877, thousands of Clydesdales were exported to other countries, particularly to Australia and New Zealand. In the early twentieth century numbers began to fall, both because many were taken for use in the First World War, and because of the increasing mechanisation of agriculture. By the 1970s, the Rare Breeds Survival Trust considered the breed vulnerable to extinction. Numbers have since increased slightly.

Clydesdales are large and powerful, although now not as heavy as in the past. They were traditionally used for draught power, both in farming and in road haulage. They are now principally used as carriage horses, and may be ridden or driven in parades or processions. The Anheuser-Busch brewery has several matched teams of eight horses which they tour internationally for publicity, known as the Budweiser Clydesdales.

A stallion is an adult male horse that has not been gelded (castrated). Stallions follow the conformation and phenotype of their breed, but within that standard, the presence of hormones such as testosterone may give stallions a thicker, "cresty" neck, as well as a somewhat more muscular physique as compared to female horses, known as mares, and castrated males, called geldings.

Temperament varies widely based on genetics and training, but because of their instincts as herd animals, they may be prone to aggressive behavior, particularly toward other stallions, and thus require careful management by knowledgeable handlers. With proper training and management, stallions are effective equine athletes at the highest levels of many disciplines, including horse racing, horse shows, and international Olympic competition.

The following list of horse and pony breeds includes standardized breeds, some strains within breeds that are considered distinct populations, types of horses with common characteristics that are not necessarily standardized breeds but are sometimes described as such, and terms that describe groupings of several breeds with similar characteristics.

While there is no single definition of the term "breed", it can be defined as a population sharing common ancestry, which has been subjected to similar selection objectives, and which conforms to certain established “breed standards”. Its members may be called purebred. In most cases, bloodlines of horse breeds are recorded with a breed registry. The concept is somewhat flexible in horses, as open stud books are created for recording pedigrees of horse breeds that are not yet fully true-breeding.

The Heck horse is a horse breed that is claimed to resemble the tarpan (Equus ferus ferus), an extinct wild equine. The breed was created by the German zoologist brothers Heinz Heck and Lutz Heck in an attempt to breed back the tarpan. Although unsuccessful at creating a genetic copy of the extinct species, they developed a look-alike breed with grullo coloration and primitive markings. Heck horses were subsequently exported to the United States, where a breed association was created in the 1960s.

A horse show is a judged exhibition of horses and ponies. Many different horse breeds and equestrian disciplines hold competitions worldwide, from local to the international levels. Most horse shows run from one to three days, sometimes longer for major, all-breed events or national and international championships. Most shows consist of a series of different performances, called classes, wherein a group of horses with similar training or characteristics compete against one another for awards and, often, prize money.

The Icelandic horse (Icelandic: íslenski hesturinn [ˈistlɛnscɪ ˈhɛstʏrɪn]), or Icelandic, is a breed of horse developed in Iceland. Although the horses are smaller (at times pony-sized) than other breeds, most registries for the Icelandic refer to it as a horse. The breed is long-lived and hardy, owing to the ruggedness of its home country. In their native Iceland they have few afflictions or diseases, thus national laws are in place preventing foreign-born horses from being imported into the country, while exported animals are not permitted to return. In addition to the gaits of walk, trot, and canter/gallop, typical of other horse breeds, many Icelandic horses can also do the tölt (ambling gait) and the flying pace. The only breed of horse in Iceland, the Icelandic is also popular internationally, and sizable populations exist in Europe and North America. The breed is still used for traditional sheepherding work in its native country, as well as for leisure, showing, and racing.

Developed from ponies brought to Iceland by Norse settlers in the 9th and 10th centuries, the breed is mentioned in various documents from throughout Icelandic history; an early reference to a named-horse appears in the 12th century. Horses were venerated in Germanic religion, a custom brought to Iceland by the country's earliest settlers. Centuries of selective breeding have developed the Icelandic horse into its modern physical form, with natural selection having also played a role in overall hardiness and disease resistance; the harsh Icelandic climate likely eliminated many weaker horses early on due to exposure and malnourishment, with the strongest passing on their genes. In the 1780s, much of the breed was wiped out in the aftermath of a volcanic eruption at Laki. The first breed society for the Icelandic horse was created in Iceland in 1904, and the breed is represented by organizations in 22 different nations as of 2024, organised under a parent association, the International Federation of Icelandic Horse Associations.