The Australian water dragon (Intellagama lesueurii, formerly Physignathus lesueurii), which includes the eastern water dragon (I. l. lesueurii) and the Gippsland water dragon (I. l. howittii) subspecies, is an arboreal agamid species native to eastern Australia from Victoria northwards to Queensland. There may be a small introduced population on the south-east coast of South Australia.