Bull (domestic cattle)
Bos taurus
90 cm
Total length of the adult penis as given in a veterinary anatomy textbook (a round 'ca. 90 cm'); endpoints, measuring method and state not stated
A bull's penis is about 90 cm long. When it is retracted, about 30 cm of that is folded into an S-bend, which straightens out at erection.
Margin note: Flat-packed for storage.
Sources
- Sisson S. (1914) The Anatomy of the Domestic Animals. 2nd ed., entirely reset. Philadelphia & London: W. B. Saunders Company. Chapter: Genital organs of the bull, pp. 586–590; Fig. 522 link
- Sisson S., rev. Grossman J. D. (1953) The Anatomy of the Domestic Animals. 4th ed., revised. Philadelphia & London: W. B. Saunders Company link
- Freitas V.M. et al. (2022) Morphological and morphometric characterization of the preputial ostium, internal preputial leaflet, and free part of the penises of Aberdeen Angus and Nellore bulls. Arq. Bras. Med. Vet. Zootec. 74(1) doi:10.1590/1678-4162-12419
- Lomillos J.M., Alonso M.E. (2020) Morphometric characterization of the Lidia cattle breed. Animals 10(7):1180 doi:10.3390/ani10071180
Drawn from
- Sisson 1914, Fig. 522 (p. 587): General view of genital organs of bull: Whole penis from root to glans, lateral view, showing the sigmoid flexure (retracted), narrow distal shaft and pointed glans with external urethral orifice
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