Chameleons not only change color to protect themselves but also when they interact with other chameleons. Researchers at Arizona State University now know that these color changes convey different types of information for social interactions. For example, male chameleons become brighter when they’re challenging one another for a female’s attention. They get brighter stripes when they’re ready to approach their opponent, and the one whose heads turns the brighter color is more likely to win the fight. That makes it easy to know who to bet on! Researchers say very rarely does the confrontation result in a fight because the less bright male usually retreats.