The frilled lizard (Chlamydosaurus kingi) is a yellowish-brown australian lizard has got a large frill of skin to the sides of the neck and throat. It is about 90 cm/35 in long, and when is angry or alarmed, it erects its frill, which may be as much as 25cm/10 in in diameter, thus giving itself the appearance of being larger than it really is. Frilled lizards are generally tree-living but may spend some time on the ground, where they run with their forelimbs in the air.