Frill Necked Lizard (Chlamydosaurus kingii)

Chlamydosaurus kingii, commonly known as the frilled-neck lizard or simply frill-necked lizard, is an iconic Australian reptile renowned for its dramatic defensive display. Native to the tropical and subtropical woodlands of northern Australia and southern New Guinea, this agamid lizard is most famous for the large, collar-like frill around its neck, which it fans out when threatened or during territorial disputes. The frill, supported by long cartilage spines connected to the jaw, is typically accompanied by an open mouth, hissing, and rearing up on hind legs to intimidate predators.

Frilled-neck lizards are primarily arboreal and diurnal, feeding on insects, spiders, and small vertebrates. They are capable of remarkable bursts of speed and can run bipedally—a behaviour often featured in wildlife documentaries. Though their frill makes them appear fierce, they usually rely on camouflage and avoidance as their first line of defence.

Chlamydosaurus kingii has become a symbol of Australian wildlife and is frequently studied for its unique behavioural adaptations and impressive visual displays. In captivity, they require spacious enclosures, warm temperatures, and vertical space to mimic their natural environment.