Specimen No. 010 · Primate
Bonobo penis size & anatomy
Pan paniscus
Reference measurement
Approx. 15.5 cm / 6.1 in
Representative estimate
CARTA gives chimpanzee and bonobo erect length as 14–17 cm; midpoint used.
Measurement source: CARTA / UC San Diego (opens in a new tab)
Did you know?
Bonobo erect penis length is comparable to chimpanzees and humans at roughly 14–17 cm.
Bonobos have a narrow filiform penis with two small lobes at the tip.
Bonobos lack the prominent visible glans found in humans, gorillas and orangutans.