Water Dragon

Lizard

Physignathus is a genus of large, diurnal and arboreal agamid lizards, commonly known as water dragons. There are two species, the Chinese water dragon Physignathus cocincinus, and the Australian water dragon Physignathus lesueurii. They are sometimes kept as pets, especially P. cocincinus. Its name is Greek for "inflated jaw".

http://en.wikipedia.org/wiki/Physignathus