Chimpanzees Jane Goodall Bonobos Gorillas Animal Behavior Primate Behavior Orangutans Social Behavior Capuchin Monkeys Vocalization Chimpanzee Behavior Marmosets Rhesus Macaques Animal Communication Cognition Mountain Gorillas Proboscis Monkey Primate Vocalization Sexual Dominance Baboons Cognitive Ethology Sexual Behavior Paleoanthropology Primate Anatomy Mycophagy Sexual Dimorphism Vocal Communication Western Hoolock Gibbon African Apes Sexual Dynamics Japanese Macaques Species Comparison
A new Science study says no single cause explains the split.