Physignathus

Physignathus is a genus of large, diurnal, arboreal, agamid lizards, commonly known as water dragons. The two species are the Chinese water dragon P. cocincinus, and the Australian water dragon P. lesueurii. They are sometimes kept as pets, especially P. cocincinus. Its generic name is Greek for 'inflated jaw'. Media related to Physignathus at Wikimedia Commons