Pig (boar)
Sus scrofa domesticus
47.5 cm (range 45 cm–50 cm)
Total length of the adult boar's penis as given in a veterinary anatomy textbook ('resembles in general that of the ox', 45–50 cm); endpoints, method and state not stated
Corkscrew
A boar's penis, 45–50 cm long, has no glans. Its front end is twisted into a spiral, usually called the corkscrew.
Margin note: Engineered for a threaded connection.
Sources
- Sisson S. (1914) The Anatomy of the Domestic Animals. 2nd ed., entirely reset. Philadelphia & London: W. B. Saunders Company. Genital organs of the boar, pp. 591–592; Fig. 527 (after Ellenberger-Baum) link
- Brennan P.L.R., Prum R.O. (2015) Mechanisms and evidence of genital coevolution: the roles of natural selection, mate choice, and sexual conflict. Cold Spring Harb. Perspect. Biol. 7:a017749 doi:10.1101/cshperspect.a017749
- Batorek-Lukač N., Tomažin U., Škrlep M., Kastelic A., Poklukar K., Čandek-Potokar M. (2019) Krškopoljski prašič (Krškopolje pig). In: Čandek-Potokar M., Nieto Liñán R.M. (eds) European Local Pig Breeds – Diversity and Performance. A study of project TREASURE. IntechOpen, London (open-access peer-reviewed chapter) doi:10.5772/intechopen.83767
Drawn from
- Sisson 1914, Fig. 527 (p. 592): Genital organs of boar, l'' = spiral anterior part of penis exposed by slitting the prepuce: Overall course of the penis with prescrotal sigmoid flexure and the spiral front part (small, schematic)
- Wikimedia Commons, 'Semen Collecting From Boar.JPG' (user Dingar, public domain): Photo of the erect, exteriorised spiral front part during semen collection: pink colour, tightness of the twist, taper. No scale.