Chameleons are reptiles that are part of the suborder iguanas. These colorful lizards are known as one of the few animals that can change skin color. However, it is a misconception that chameleons change color to match their environment. In fact, a chameleon's skin changes color in response to its emotions, such as anger or fear, as well as changes in light, temperature, or humidity. 10.5 x 5.5 x 4 centimeters.