Bulls have a fibro-elastic penis. Given the small amount of erectile t...
wikipedia - 14 Dec 2020Bulls have a fibro-elastic penis. Given the small amount of erectile tissue, there is little enlargement after erection. The penis is quite rigid when non-erect, and becomes even more rigid during erection. Protrusion is not affected much by erection, but more by relaxation of the retractor penis muscle and straightening of the sigmoid flexure.[29][15][30]
