Bonabo ape sexual behavior. American Naturalist Primates 50— Andelman, S. However, our general impression was that low-ranked females often attempted to initiate genital contacts with high-ranked females, but were typically ignored by them. Particularly relevant are cases where a low-ranked female was invited by a high-ranked female to have sex, especially if this happened in the j idol u15 of other socially important group members. Although large male chimpanzees can exceed any bonobo in bulk and weight, the two species actually broadly overlap in body size. Birds and MammalsD. Smuts, D. Author information Article notes Copyright and License information Disclaimer. Bonobos do it sexually. Bonobo females use copulation calls as social signals. There are, however, profound differences between the two species Cf. By 10 months the bonobo infant ventures about three to four meters 9.