 Anoles can function as a biological pest control by eating insects that may harm humans or plants, but represent a serious risk to small native animals and ecosystems if introduced to regions outside their home range.Anoles are a very diverse and plentiful group of lizards.They are native to tropical and subtropical South America, Central America, Mexico, the offshore East Pacific Cocos, Gorgona and Malpelo Islands, the West Indies and southeastern United States.