PHILIPPE PSAILA / SCIENCE PHOTO LIBRARY PHILIPPE PSAILA / SCIENCE PHOTO LIBRARY
Chameleon's head, close-up, showing one of its large eyes. Chameleons (family Chamaeleonidae) have very good eye sight for reptiles. Their eyes can rotate and focus separately giving a full 360-degree arc of vision around their body. Both eyes can be focused in the same direction, and the eyelids are fused forming a small hole just large enough for the pupil to see through. This gives sharp stereoscopic vision and depth perception, letting Chameleons see small insects from a long (5-10 centimetre) distance. Photographed in the Montagne des Francais Reserve, Madagascar.
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