The great apes are the members of the biological family Hominidae which includes humans, chimpanzees, gorillas, and orangutans. Characteristics The great apes are large, tailless primates, with the smallest living species being the bonobo at 30–40 kilograms in weight, and the largest being the gorillas, with males weighing 140–180 kilograms. In all great apes, the males are, on average, larger and stronger than the females, although the degree of sexual dimorphism varies greatly am… (More on Pongidae)