Other endemic species of wild life consist of butterflies, chameleons, lizards and frogs. Nudj are swamp lizards, similar to chameleons. Like most species of chameleons, the panther chameleon is very territorial. Some species, like geckos and chameleons, adhere to vertical surfaces including glass and ceilings. Colour change signals a chameleon's physiological condition and intentions to other chameleons. For example, chameleons, frogs, pangolins and anteaters have prehensile tongues. Endemic species include a large number of chameleons and other reptiles. Direct sunlight is a prerequisite for cold-blooded reptiles like chameleons. A typical excursion would include viewing several species of lemur, gecko, chameleons, and bird species. The waterholes are also home to bullfrogs, chameleons, dung beetles, killifish, and terrapins. Chameleons (family Chamaeleonidae) are highly adapted as ambush predators. Many species of chameleons are threatened by extinction. The Way We Live, the Chameleons, the Mock Turtles and the Cassandra Complex. Most species are pleurodont, though agamids and chameleons are acrodont. Pronation has evolved multiple times, among mammals, chameleons, and varanids.