Chimpanzee (Pan troglodytes)

The chimpanzee is a highly intelligent primate. Chimpanzees differ from human beings by only one percent of their genetic material, making them our closest relative. They are also problem solvers who use a variety of tools, such as digging sticks and sponges made of bark or leaves. Chimpanzees also have a complex communication system and live within an elaborate, hierarchical social structure. Unlike humans, however, chimpanzees don’t swim.