The frilled-neck lizard, known scientifically as Chlamydosaurus kingii, is a distinctive reptile native to northern Australia and New Guinea. It is famous for its large, frilled collar of skin around its neck, which it can expand when threatened. This display makes the lizard appear larger to potential predators. Frilled-neck lizards are primarily arboreal, meaning they live in trees, and they are excellent climbers. They feed mainly on insects and small invertebrates. When not displaying their frill, these lizards have a brown or gray coloration that helps them blend into their surroundings, providing camouflage from predators.