The chameleon is certainly the first animal that comes to the mind when camouflage is raised. The chameleon changes its colour according to the ground on which it stands. To the left can be seen the mark made on the coat of the chameleon by the fern left on its back. Light and temperature changes are considered to have a role in the reactions that cause this mark. Yet, the animal is not even aware of its advantageous skill in changing colours. Its body is originally created to automatically match the colours of its surroundings.