Active during the day, the crested chameleon commences foraging in the early morning, becoming increasingly energetic as the temperature rises (6). It moves slowly and stealthily along branches, aided by its specially adapted feet, the toes of which are fused into two opposing pads, providing a pincer-like grip. Once prey has been sighted it is caught by means of the crested chameleon’s remarkable, extensile tongue. The contraction of special muscles within the tongue rapidly propels it towards the prey, which is snared by a combination of the tongue’s sticky mucous coating and a vacuum created by muscles in the tip (7). While the crested chameleon mainly feeds on insects such as locusts and grasshoppers, it has also been recorded catching a young frog. During the hottest part of the day, this species rests in the shade where it conceals itself from predators behind broad leaves. It recommences hunting from late afternoon until dusk, before spending the night resting amongst vegetation close to ground level (6).
The breeding season occurs from July to September in the period between the end of the wet season and the beginning of the dry season. Males establish territories where they mate with receptive females and which they defend from rival males (7). After mating, the female lays a clutch of between 11 and 14 eggs (6), but clutches of as many as 16 to 37 have been reported among captive bred specimens (3).