Complex-toothed Flying Squirrel

The complex-toothed flying squirrel has grey-brown upperparts, a white underside and a slight reddish wash on its face and tail. A black tuft below the base of each ear is especially distinctive. Its total length is about 60cm, roughly half of which is tail. (Wikipedia, general species account)

This nocturnal squirrel occurs in the Chinese provinces of Hubei, Hunan, Guizhou, Sichuan and Yunnan. It nests on cliffs, often around 30m above ground, and inhabits mountains from roughly 1,300–1,500m, with some reports as high as 2,750m. At night it searches for nuts, fruit and leaves; litters contain up to four young after an 80–90-day gestation. (Wikipedia, general species account)