If you own or are thinking of owning a chameleon, you'll want expert advice on the care and feeding of your new, reptilian best friend. The chameleon is world renowned for its ability to change its skin color rapidly (through movement of pigment cells) and for the outrageous length of its tongue (more than one and a half times its body length). Relatives of agamids and iguanas, chameleons are insect-eating, tree climbing reptiles that have highly specialized needs.