Przewalski’s horses were long thought to have never been domesticated by humans, making them the last truly “wild” type of horse. However, recent DNA evidence has show that like other horses that exist in the wild, they are feral (wild descendents of domestic animals). The Przewalski’s horse inhabits the high altitude grassland steppes of Mongolia.
History
The Przewalski’s horse became extinct in the wild in the 1960s, but captive bred animals have been reintroduced into the wild with some success. Nevertheless, it is still criticially endangered.
Long thought to be the last truly wild horse, recent DNA studies have shown that Przewalski's horses are descended from the Botai horse, an ancient breed of domesticated horse. They reverted to their feral state in the wild thousands of years ago, and until recently were thought to be truly wild.