The natural habitat of the horse is grassland and open forest. Horses originally evolved in sparsely vegetated habitats where other large plant-eaters could not survive. Today, domesticated horses live around the world in a mixture of temperate, tropical, and semi-tropical climates, wherever humans have imported them.
Horses were first domesticated on the Asian steppe. These vast, dry grasslands still support the only surviving subspecies of wild horse, Przewalski's horse. Elsewhere, so-called wild horses are actually feral domesticated horses, animals that are distinguished from the original wild population by generations of artificial breeding by humans. These feral horses live in a variety of habitats, including the Great Plains of the United States, barrier islands off the southeast coast of the United States, and the New Forest of the United Kingdom.