Javanese flying squirrel

The Javanese flying squirrel, Iomys horsfieldii, is a small nocturnal gliding rodent of the squirrel family Sciuridae. Its range runs from the Malay Peninsula south through Sumatra, Java and Borneo, with additional records from Singapore, Tioman and Penang. It is orange-brown to brown-grey, with a body length that averages about 182 millimetres and a tail as long as the body or a little longer. Like other flying squirrels it has a patagium, a thin fold of skin joining the fore and hind limbs that lets it glide between trees, and it has large eyes and ears and long claws for gripping bark. It is adaptable, living in many kinds of forest including degraded forest, in scrub and on durian plantations, and it shelters in hollow trees; it can be a pest in orchards. Much of its biology, including its diet, breeding and lifespan, has not been studied. The IUCN lists it as Least Concern because it is widespread and common, though it has become rare or extinct in Singapore.