The Red Giant Flying Squirrel (Petaurista petaurista) perched on a tree trunk, Sepilok, Sabah, Borneo

Like all other species of flying squirrels, it has a membrane of skin between its legs, which is used to glide between trees. It is characterised by its dark red colouring and large eyes. When compared to other species of squirrels, this species is large, being on average 422mm long. Entire body dark reddish except for black on nose, chin, eye-ring, behind the ears, feet and tail tip