Wild ass

The Mongolian wild ass's distribution range was dramatically reduced during the 1990s. A 1994–1997 survey estimated its population size at 33,000 to 63,000 individuals over a continuous distribution range encompassing all of southern Mongolia.[4] In 2003, a new survey found approximately 20,000 individuals over an area of 177,563 square kilometres (68,557 sq mi) in southern Mongolia.[5] The population estimates of the Mongolian population should be treated with caution due to a lack of proven survey protocols.[6][7] Despite that, the subspecies lost about 50% of its former distribution range in Mongolia in the past 70 years.