- any of numerous chiefly insectivorous New World lizards of the genus Anolis, related to the iguana, that have the ability to change the color of their skin among a wide range of green and brown shades.
- any small arboreal tropical American insectivorous lizards of the genus Anolis, such as A. carolinensis (green anole): family Iguanidae (iguanas). They are able to change the colour of their skin