The red giant flying squirrel or common giant flying squirrel (Petaurista petaurista) is a species of flying squirrel, found in northern South Asia, southern China and Southeast Asia. It is a dark red colour with black extremities and can grow to a head-and-body length of 42 cm (17 in). The tail is long and provides stability when it glides between trees. It is nocturnal, feeding mainly on leaves, fruits and nuts, and occasionally insects. This squirrel faces no particular threats apart from ongoing destruction of suitable habitat. It has a wide range and is relatively common, and the International Union for Conservation of Nature lists it as a "least-concern species".