Japanese giant flying squirrel (Petaurista leucogenys) is a type of flying squirrel. Like other flying squirrels it has a web of skin between its legs which it uses to glide between trees. Glides of 160 metres have been recorded. The tail is used for stability during flight. The body is about 25–50cm long, and the tail a further 30–40cm. It weighs between 700 and 1500g. It is much larger than the related Japanese dwarf flying squirrel.
