Spotted Giant Flying Squirrel - Petaurista elegans Inhabits southern Thailand and Peninsular Malaysia. This subspecies bears a black tail and is normally heavily flecked with white. Thorington et al (2012) recognise 8 subspecies, 7 of which occur in Southeast Asia (however, 2 of these subspecies, which occur in western Burma and parts of the Indian subcontinent, may be distinct species).
Black giant squirrel (or Malayan giant squirrel) (Ratufa bicolor) is a large tree squirrel in the genus Ratufa native to the Indomalayan zootope. It is found in forests from northern Bangladesh, northeast India, eastern Nepal, Bhutan, southern China, Myanmar, Laos, Thailand, Malaysia, Cambodia, Vietnam and western Indonesia.