Chimpanzee
Pan troglodytes
14.4 cm (range 10 cm–18 cm)
Penile length during full erection (landmarks not stated in the abstract)
Has a bone
Eleven adult male chimpanzees, measured at full erection, averaged 14.4 cm. The usual '8 cm' goes back to a round number in a 1981 essay, with no sample behind it.
Margin note: Short's figure was short.
Sources
- Dixson A.F., Mundy N.I. (1994) Sexual behavior, sexual swelling, and penile evolution in chimpanzees (Pan troglodytes). Archives of Sexual Behavior 23(3):267-280 doi:10.1007/BF01541563
- Short R.V. (1981) Sexual selection in man and the great apes. In: Graham C.E. (ed.) Reproductive Biology of the Great Apes: Comparative and Biomedical Perspectives. Academic Press, New York, Ch. 13, pp. 319-341 doi:10.1016/B978-0-12-295020-9.50019-4
- Mittermeier R.A., Rylands A.B., Wilson D.E. (eds) (2013) Handbook of the Mammals of the World. Vol. 3, Primates. Lynx Edicions, Barcelona. Family Hominidae, pp. 792-854 (Pan troglodytes account pp. 852-853) link
- Sonntag C.F. (1924) The Morphology and Evolution of the Apes and Man. John Bale, Sons & Danielsson, London, pp. 270-271 link
- Duvernoy G.L. (1855-1856) Des caractères anatomiques des grands singes pseudo-anthropomorphes. Archives du Muséum d'Histoire Naturelle (Paris) 8:1-248, pls I-XVI (penis pp. 208-210, 227; Pl. XVI figs IX-X) link
- Dixson A.F. (1998) Primate Sexuality: Comparative Studies of the Prosimians, Monkeys, Apes, and Human Beings. Oxford University Press link
Drawn from
- Duvernoy 1855-56, Archives du Muséum 8, Pl. XVI figs IX-X: Lateral view of the erect penis of a living young chimpanzee (fig. IX, drawn 'natural size'), with the short sheath (f) covering the base; fig. X partly retracted. Colour lithograph showing the blood-red colour, slender shaft, small knob-like glans (g) and slight curve near the tip
- Duvernoy 1855-56, Pl. XVI (whole plate, with caption): Full plate for context; caption 'F. IX et X. Verge de chimpanzé, d'après le vivant'