The Blackbeard lizard

The Black-bearded Flying Lizard is also called the Draco melanopogon; both are good names but I prefer to call it the Blackbeard Lizard. The black flap on their neck sort of expands out and forms wings for the lizard to glide on and escape predators. Citation and more info at http://www.ecologyasia.com/verts/lizards/black-bearded_gliding_lizard.htm