These tuatara were photographed on Stephens Island, Cook Strait, in 1972. The male (left) has a more prominent crest of spines along its back, neck and tail, and is larger than the female. Adult males typically weigh about 700 grams, and females 450 grams.
Te whakamahi i tēnei tūemi
Department of Conservation
Photograph by J. L. Kendrick
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