Sumatran Flying Dragon

The common gliding lizard is a species of agamid lizard endemic to Southeast Asia. It has elongated ribs and skin flaps on the sides of its body which, when opened, allow it to glide between tree trunks. The body is about 9 cm long with a slightly longer tail, and dark grey-brown with stripes and patterns that help it camouflage against bark (Wikipedia, general species account).