Coloration is remarkably varied in lizards. Many species display perfect cryptic coloration that makes them invisible in their natural habitat; others are vividly colored in shades of emerald and turquoise blues, reds and yellows. Many lizards, such as iguanas, can see in color. Their colorful body parts allow them to communicate with each other and help them tell which are male and which are female.
Chameleons' tongues are longer than their bodies, and their eyes can look in two different directions at once.
There are some species in lizards that squirt blood from their eyes to protect themselves from the predators or when they feel that there is some kind of threat. They can do this with the help of “horns” which are present near their eyes. The blood squirted from the eyes can go for a distance up to 4 feet.