Na´ama, 7 month old chimpanzee, living with a caregiver until she can join the rest of the group at the zoo, Jerusalem, December 5, 2006. Chimpanzees are very intelligent great apes that are closely related to humans. They live in a variety of environments in western and central Africa. Chimps live in small, stable groups (called communities or unit groups) of about 40-60 chimps. They are an endangered species, since the forests they live in are cut down and used for farm land.Photo by Yossi Zamir / Flash90 F061206YZ01