<P> The most distinct feature of these lizards is the large ruff of skin which usually lies folded back against its head and neck . The neck frill is supported by long spines of cartilage which are connected to the jaw bones . When the lizard is frightened, it produces a startling deimatic display: it gapes its mouth, exposing a bright pink or yellow lining; it spreads out its frill, displaying bright orange and red scales; raises its body; and sometimes holds its tail above its body . This reaction is used for territorial displays, to discourage predators, and during courtship . The red and orange parts of its frill contain carotenoid pigments . </P> <P> The bones of the frill are modified elongate hyoid types that form rods which expand the frill . Secondarily the frill can serve as a form of camouflage when relaxed; there is no standard coloration to the body, but it is usually darker than the frill . </P> <P> The frilled - neck lizard is found mainly in the northern regions of Australia and southern New Guinea . The lizard on rare occasions is found in the lower desert regions of Australia but primarily inhabits humid climates such as those in the tropical savannah woodlands . </P> <P> It tends to be an arboreal lizard, meaning it spends a majority of its time in the trees . The lizard ventures to the floor only in search of food, or to engage in territorial conflicts . The arboreal habitat may be a product of the lizard's diet, which consists mainly of small arthropods and vertebrates (usually smaller lizards). However, the trees are most importantly used for camouflage . </P>

Where do frilled neck lizards live in australia