Explore, enjoy and protect the planet: "Parson's Chameleon" Heaviest of the chameleons, and one of the longest, Parson's chameleon (Calumma parsonii) is identified by its large, triangular head and the male's warty nose horns. A native of Madagascar, it inhabits the edges of the rain forest, snapping up insects with its long tongue and also feeding on birds, smaller lizards, and the occasional bit of vegetable matter. Chameleons have the famous ability to change color, which is caused by the movement of pigment in three layers of cells below their transparent outer skin. Printed on recycled paper.