page_title: Chlamydosaurus
section_title: Reproduction and sexual dimorphism
hierarchical_section_title: Chlamydosaurus / Reproduction and sexual dimorphism
caption_attribution_description: English: Engraving of Frill-necked Lizard (Chlamydosaurus kingii) from Narrative of a Survey Volume 2 by Phillip Parker King
context_page_description: The frill-necked lizard, also known commonly as the frilled lizard, frilled dragon or frilled agama, is a species of lizard in the family Agamidae. The species is endemic to northern Australia and southern New Guinea. This species is the only member of the genus Chlamydosaurus.
  Its common names come from the large frill around its neck, which usually stays folded against the lizard's body. C. kingii is largely arboreal, spending the majority of its time in the trees. Its diet consists mainly of insects and small vertebrates. Frill-necked lizards, or 'frillies' as some call them, will occasionally eat plants as well, although this behaviour is uncommon. It's a relatively large lizard, averaging 85 cm in total length and is kept as an exotic pet.
context_section_description: The frilled-neck lizard is sexually dimorphic; meaning that there are physical differences between male and females. This dimorphism is apparent in the length of the lizard; the male is generally larger than the female. There is little to no dimorphism in the colour of the lizard.
  Frilled-necked lizards breed in the early wet season from September to October. Adult males fight for mates, displaying their frills and biting each other. One to two clutches of 6–25 eggs are laid from early to mid-wet season from November to February. The eggs are laid in a nest 5–20 cm below ground, and usually in sunny areas. Incubation takes two to three months. Gender is partly temperature determined, with extreme temperatures producing exclusively females, and intermediate temperatures (29 to 35 °C) producing equal numbers of males and females. Their eggs are soft-shelled.
caption: Chlamydosaurus kingii from Narrative of a Survey Volume 2, by Phillip Parker King, 1827.
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