Gobi big brown bat of the upper jaw are distinctly higher than the outer ones. The Gobi big brown bat is native to central Asia. Its range extends from Alborz in northern Iran, through Kazakhstan, Afghanistan, northern India, Mongolia, and Tuva in southern Siberia, to eastern China. It typically inhabits desert, semi-desert and mountain regions. It may roost alone or in small groups, choosing shaded areas, crevices in rocks or the interiors of old buildings, and sometimes the outer parts of caves, but not trees. This bat has been little researched. Like other vesper bats, it is an insectivore, and it is thought that
Gobi Desert the sand-strewn surface and, lastly, the salt lakes which occupy its lowest parts. For hundreds of kilometers, nothing can be seen but bare sands; in some places they continue so far without a break that the Mongols call them "Tengger" (i.e. sky). These vast expanses are absolutely waterless, nor do any oases relieve the unbroken stretches of yellow sand, which alternate with equally vast areas of saline clay or, nearer the foot of the mountains, with barren shingle. Although on the whole a level country with a general altitude of , this section, like most other parts of the Gobi,