Ngel Nyaki Forest Reserve, eastern Nigeria Photo courtesy of Hazel Chapman		Mbam et Djerem National Park, central Cameroon Photo courtesy of Amy Pokempner		Mbam et Djerem National Park, central Cameroon Photo courtesy of Amy Pokempner

Chimpanzees in the Ebo Forest, Cameroon.
Photo courtesy of Robbie Whytock and San Diego Zoo Global