The green tree python is found in Australia and New Guinea and is an endangered species. They live in the treetops of tropical, humid forests and coil up on the branches to wait for small rodents or birds to come by. They can locate prey by using their labial pits, a small row of holes on their upper lip. These pits allow them to detect the heat given off by their prey, which tells the python how big the animal is and how far away it is.
Young tree pythons are bright yellow, orange or red until they change to a bright green like the adults. The adults have white and/or blue markings on their back and can grow between three to five feet long.