A close relative of the lizard, chameleons are found in the whole of Africa and in some parts of Asia. It can grow up to a length of 60 cms. The most striking thing about the chameleon is the speed with which it can change its colour from white to yellow, to black, to green or to brown.
These changes occur due to the change of light and temperature of its surroundings and the condition of the animal. The chameleon does not need to camouflage because when it is hunting, it is able to deceive its prey by remaining perfectly still on a branch for hours.
It very easily catches its prey over long distances because of its sticky tongue, which can dart out up to 10 cms. Its large prominent eyes can turn 180° and each eye can move independently making it an expert hunter.
Below Chameleon info from Wikipedia (Read More):-
The family Chamaeleonidae are a distinctive and highly specialized clade of lizards. They are distinguished by their parrot-like zygodactylous feet, their separately mobile and stereoscopic eyes, their very long, highly modified, and rapidly extrudable tongues, their swaying gait, and the possession by many of a prehensile tail, crests or horns on their distinctively shaped heads, and the ability of some to change color. Uniquely adapted for climbing and visual hunting, the approximately 160 species of chameleon range from Africa, Madagascar, Spain and Portugal, across south Asia, to Sri Lanka, have been introduced to Hawaii and California, and are found in warm habitats that vary from rain forest to desert conditions.
http://en.wikipedia.org/wiki/Chameleon