A small green anole lizard (Anolis carolinensis, right) in the southern United States used to have the only game running when it came to hunting insects. (sciencemag.org)
And other studies of green anoles have shown changes, too: Anoles that moved to a new island with more trees than bushes evolved longer legs, perhaps to travel greater distances, whereas anoles living in cities have apparently evolved stickier feet to cling to metal and glass. (sciencemag.org)
In fact — in one of the most detailed examples of rapid evolution to date — a new study shows that just one cold snap can change the way green anoles» muscular and nervous systems respond to temperature. (sciencemag.org)