The Onager is a large member of the genus ''Equus'' of the family Equidae native to the deserts of Syria, Iran, Pakistan, India, Israel and Tibet. It is sometimes known as the Wild Asian Ass.
Like many other large grazing animals, the onager's range has contracted greatly under the pressures of hunting and habitat loss, and of the six subspecies, one is extinct and two are endangered. The kiang , a Tibetan relative, was previously considered to be a subspecies of the onager as ''E. hemionus.. more