The wild Tarpan subspecies is Equus ferus ferus, Przewalski's Horse is Equus ferus przewalski, and the domesticated horse is Equus ferus caballus. The rules for the scientific naming of animal species are determined in the International Code of Zoological Nomenclature, which stipulates that the oldest available valid scientific name is used to name the species. Foals need to lie down more often and rest longer than adult horses. There is tremendous debate over the proper age to begin training a foal. Some advocate beginning to accustom a foal to human handling from the moment of birth, using a process termed imprinting or "imprint training". The Shetland pony is one of the smallest pony breeds, but also is very strongPony breeds have developed all over the world, particularly in cold and harsh climates where hardy, sturdy, working animals were needed. However, horses are used in the Musical Ride as well as by several provincial and municipal police detachments. In the United States, mounted patrols are still essential to local law enforcement operations.

But the Wild Horse Research Center is optimistic about the breed's recovery. Recently, they donated a Cayuse Indian Pony to the Kentucky Horse Park near Lexington with the hope that more people could discover the saga if this unique horse. They are also working with one small stud bunch at the farm and anxiously await the spring foals each year. The American Quarter Horse traces its roots back to the 1600’s. The horses in America at this time were mostly of Spanish origin, with the greatest amounts of blood from Arabian Barbs and Turk lines. In 1611 the first significant import of English horses was made to Virginia. These English horses were of native, eastern and Spanish blood.