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Australian water dragon
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.
== Description ==
Australian water dragons have long powerful limbs and claws for climbing, a long muscular laterally-compressed tail for swimming, and prominent nuchal and vertebral crests. (A nuchal crest is a central row of spikes at the base of the head. These spikes continue down the spine, getting smaller as they reach the base of the tail.)〔(Australian National Botanic Gardens: Research into Water Dragons )〕
Including their tails, which comprise about two-thirds of their total length, adult females grow to about 60 cm (2 feet) long, and adult males can grow slightly longer than one metre (3 feet) and weigh about 1 kg. Males show bolder colouration and have larger heads than females.〔(Australian Museum Online: Wildlife of Sydney )〕 Colour is less distinct in juveniles.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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