The Chimpanzee is well adapted to the life of the tree tops. Its most distinguishing characteristics are its arms, legs, pelvis, hands, and feet. Its arms are longer than its legs, making swinging and climbing much easier with longer, better adapted arms. The legs are shorter, but adapted well for walking, running, and standing. Having no tail, the pelvis is better adapted for sitting. The hands and feet may be the most interesting characteristic of the Chimpanzee. The hands of a Chimpanzee have four very long fingers, and a thumb used for grasping and climbing. The Chimpanzee, like the Gorilla, walks on its feet and knuckles. This knuckle walk helps support their upper body. Like humans, Chimpanzees have well developed sensory characteristics with well developed sight, touch, hearing, and smell, all of which help to stay alert and search for food. Also being one of the most intelligent animals in the world, the Chimpanzee has a large brain in proportion to its body. Scientists who do research and study Chimpanzees have been able to teach sign language and train them to do certain tasks. Some of you may know that there are well trained Chimpanzees that have even appeared in Hollywood movies, and have been used by NASA in space programs.