The wild Bactrian camel (Camelus ferus) is called havtgai ("flat") in Mongolian. It is closely related to the domesticated Bactrian camel (Camelus bactrianus). They are both large, even-toed ungulates native to the steppes of central Asia, with a double hump (small and pyramid-shaped). Until recently, wild Bactrian camels were considered to have descended from domesticated Bactrian camels (Camelus bactrianus) which had either escaped captivity or were returned to the wild. However, a 1.9% difference in Mitochondrial DNA suggests a divergence date of 0.7 to 1.5 million years ago, long before the start of domestication. While previously considered to be a subspecies (Camelus bactrianus ferus) of the Bactrian camel, the latest research establishes the wild Bactrian camel as a separate species