these lizards spend most of their life in trees (they are primarily arboreal). they live in the north of australia and in new guinea. they inhabit moist tropical and warm-temperate forests and in woodlands with shrubby understory. when displayed, the frill is 9.5-14 inches (24-34 cm) wide. when the lizard is at rest, the frill folds down on its shoulders. adults are over 8 inches (20 cm) long.