Large arboreal insectivorous Australian lizard with a ruff of skin around the neck WordNet 3.0 & Open English WordNet

The lizard Chlamydosaurus kingii, native to northern Australia and southern New Guinea, which has a large contractile membranous frill around its neck that usually stays folded against its body but is extended in territorial and courtship display. Wiktionary

Lizard. Wiktionary (translation)