Chamelon The Color Change

For many years scientist believed that chameleon changed their skin to blend in to their environment. Scientists have recently discovered that chameleons may have evolved the skill to catch the eye of the opposite the sex. A study was conducted to prove the findings about the chameleon color changing. They tested 21 different chameleons in Africa and found that all share the evolutionary trait. The reason that chameleons change color is because they have a fourth cone in their eyes that is UV sensitive. They see in colors and when two male chameleons duel they flash the most dominate colors until one of the chameleons go into a dark color to show how they surrender.

http://news.bbc.co.uk/2/hi/science/nature/7215005.stm