The Przewalski's horse, named after the Russian explorer who discovered this species in '97, is native to high altitudes in western Mongolia. This sub-species, although considered its own distinct species by some taxonomists, is the only true wild horse existing today. The Przewalski's horse has not been seen in the wild since the'60's and exists only in zoos and captive breeding programs. It is estimated that there are as few as 1500 non-hybrid Przewalski's living today.