Biology of the Chameleon They do this by sucking in water, then swishing their eyeball around the socket. This allows them to flush out any foreign matter, successfully keeping infections away. They are usually only able to do this when they have a source to a lot of running water. For this reason, regular showers are very beneficial to the health of chameleon's eyes. Tongue - A chameleon's tongue consists of multiple parts that all work together to enable their characteristic ability to shoot their tongue's long distances. The first part is the hyoid bone, which allows for the initial spring of the tongue out of the mouth. The rest of their tongue is composed of strong muscles that propel the tongue forward, and retract it back into the chameleon's mouth after it has struck its target. The tip of the chameleon's tongue is another muscle that is both sticky and produces a "suction cup" effect, further strengthening the tongue's hold on the prey. Feet - The feet of chameleons have evolved to give them the best possible grip and maneuverability in the trees. Their feet are actually bifurcated with