Gobi jerboa sibirica annulata". The Gobi jerboa was differentiated from "A. sibirica sibirica" because of its enlarged and globular auditory bullae, and its nearly vertical upper incisors (Allen 1925). Today, there have been 163 recorded occurrences of the Gobi jerboa, however there is currently no known data that examines its population status (The Global Biodiversity Information Facility 2013 and Batsaikhan et al. 2008). The Gobi jerboa is native to China and Mongolia (Smith and Xie 2008). In China, the Gobi jerboa extends east into Xinjiang, west into Nei Mongol, and north into Gansu. In Mongolia, the gobi jerboa can be found in
Gobi jerboa auditory bullae are very large in size, and almost meet at the front of the skull (Smith and Xie 2008). The dental formula of the Gobi jerboa is I 1/1 C 0/0 P 1/1 M 2/2 (R. Taylor). One of the most prominent features of the Gobi jerboa are their ears, since they are almost three times as large as their heads. Their large ears give them an extra keen hearing sense, which helps to serve as extra protection in their vulnerable environment. The great size of their ears also helps to cool their bodies by dissipating heat, since they