Did You Know?
The western lowland gorilla has a larger, wider skull than a mountain gorilla and dark brownish black hair. Young gorillas have a small white rump patch until they are about four years old. Mature males are called "silverback" males because they have a saddle of white hair across their backs and extending onto the rump and thighs. Western lowland gorillas, like other primates, have unique fingerprints and nose prints.