male Green Anole (Anolis carolinensis) and male Brown Anole (Anolis sagrei sagrei) please view LARGE
The mature male Green Anole shows the ridge or crest down the back called a "roach" which is used in territorial and breeding displays. The mature male Brown Anole is also exhibiting the crest-like ridge along its' back. Male Greens may fight other Greens, but the battle is usually not fatal for the loser. If a Green Anole and a Brown Anole fight, the Green almost always wins and kills the Brown. In this encounter, the Green won territorial rights for this top post of a chain-link fence. The Brown, luckily this time, just scurried off in defeat.