The Common Gliding Lizard (Draco sumatranus). It is another member of critters and one of the most common in SE Asia with the ability to glide in the air from tree to tree. It has skiny flaps on both sides of its body that when opened serve as wings in his silent flight. They also have a flap of brightly coloured skin on the bottom of their necks called a dewlap that they use for communication. For example to deter a rival or attract a female.