Figure 32.33 Apes (A) The several genera of gibbons are all smaller in size than the other apes. Gibbons are found throughout Southeast Asia. (B) Orangutans are also native to Asia, living in the forests of Sumatra and Borneo. (C) Gorillas—the largest apes—are restricted to humid African forests. This male is a lowland gorilla. (D) Chimpanzees, our closest relatives, are found in forested regions of Africa.