The Tree runner (Plica umbra) is a pretty species of lizard found in the Amazon. Looking almost chameleon-like, it has a beautiful array of green, tan and brown scales. Male Tree runners have a yellow throat. They are mostly found on branches or tree trunks and they eat ants. A fully grown adult will reach around 22cm in length. Wonderful photo by Ian Paul Markham and information from Brian Crnobrna at Fauna Forever.