"The Australian Water Dragon (Physignathus lesueurii), which includes the Eastern Water Dragon (P. l. lesueurii) and the Gippsland Water Dragon (P. l. howittii), is an arboreal agamid species native to Eastern Australia from Victoria north to Queensland, there is also a small population in the south-east coast of the State of South Australia.
Australian water dragons are extremely shy in the wild, but readily adapt to continual human presence in suburban parks and gardens. They are fast runners and strong climbers. When presented with a potential predator, they seek cover in thick vegetation, or drop from an overhanging branch into water. They are able to swim totally submerged, and rest on the bottom of shallow creeks or lakes for up to 90 minutes, to avoid detection.
Both males and females display typical agamid behaviour such as basking, arm-waving and head-bobbing. Fast arm-waving signals dominance, while slow arm-waving signals submission. Males are territorial, and in areas of higher population density, males exhibit displays of aggression toward other males including posturing and chasing."
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