Creatures with Cocks: Hilarious Adults-Only Cartoons for Lovers of the Natural World and Dick Jokes

Product Information

Leon Fradley Whitney (1952). The Raccoon. Practical Science Publishing Company. Archived from the original on 26 March 2014 . Retrieved 24 July 2013. The human penis is an external sex organ of male humans. It is a reproductive, intromittent organ that additionally serves as the urinal duct. The main parts are the root of the penis (radix): It is the attached part, consisting of the bulb of penis in the middle and the crus of penis, one on either side of the bulb; the body of the penis (corpus); and the epithelium of the penis consists of the shaft skin, the foreskin, and the preputial mucosa on the inside of the foreskin and covering the glans penis. Giustina, Anthony (31 December 2005). Sex World Records. Lulu.com. p.152. ISBN 978-1-4116-6774-7. Archived from the original on 11 October 2013 . Retrieved 3 October 2012. The penises of even-toed ungulates are curved in an S-shape when not erect. [20] In bulls, rams and boars, the sigmoid flexure of the penis straightens out during erection. [21]

The glans penis of the marsh rice rat is long and robust, [90] averaging 7.3mm ( 9⁄ 32in) long and 4.6mm ( 3⁄ 16in) broad, and the baculum (penis bone) is 6.6mm ( 1⁄ 4in) long. [91] As is characteristic of Sigmodontinae, the marsh rice rat has a complex penis, with the distal (far) end of the baculum ending in three digits. [92] The central digit is notably larger than those at the sides. [90] The outer surface of the penis is mostly covered by small spines, but there is a broad band of nonspinous tissue. The papilla (nipple-like projection) on the dorsal (upper) side of the penis is covered with small spines, a character the marsh rice rat shares only with Oligoryzomys and Oryzomys couesi among oryzomyines examined. [93] On the urethral process, located in the crater at the end of the penis, [94] a fleshy process (the subapical lobule) is present; it is absent in all other oryzomyines with studied penes except O.couesi and Holochilus brasiliensis. [95] The baculum is deeper than it is wide. [90] Malie Marie Sophie Smuts; Abraham Johannes Bezuidenhout (1987). Anatomy of the dromedary. Clarendon Press. ISBN 978-0-19-857188-9. Archived from the original on 26 March 2014 . Retrieved 11 June 2013. Skurski, D.; Waterman, J. (2005). "Xerus inauris". Mammalian Species. 781: 1–4. doi: 10.1644/781.1. Bassert, Joanna M.; McCurnin, Dennis M. (1 April 2013). McCurnin's Clinical Textbook for Veterinary Technicians. Elsevier Health Sciences. ISBN 978-1-4557-2884-8 . Retrieved 18 February 2014. Sue Taylor Parker; Karin Enstam Jaffe (2008). Darwin's Legacy: Scenarios in Human Evolution. AltaMira Press. p.121. ISBN 978-0-7591-0316-0. Archived from the original on 26 March 2014 . Retrieved 23 July 2013.R. F. Ewer (1973). The Carnivores. Cornell University Press. ISBN 978-0-8014-8493-3. Archived from the original on 28 May 2013 . Retrieved 9 January 2013. Sanger TJ, Gredler ML, Cohn MJ (October 2015). "Resurrecting embryos of the tuatara, Sphenodon punctatus, to resolve vertebrate phallus evolution". Biology Letters. 11 (10): 20150694. doi: 10.1098/rsbl.2015.0694. PMC 4650183. PMID 26510679. Male and female emus are similar in appearance, [13] although the male's penis can become visible when it defecates. [14]

Macdonald, D.W., ed. (2009). The Princeton Encyclopedia of Mammals. Princeton University Press. ISBN 978-0-691-14069-8. Hoffmeister, Donald F. (2002). Mammals of Illinois. University of Illinois Press. ISBN 978-0-252-07083-9 . Retrieved 22 July 2013. Tim Birkhead (2000). Promiscuity: An Evolutionary History of Sperm Competition. Harvard University Press. p.102. ISBN 978-0-674-00666-9. Archived from the original on 26 March 2014 . Retrieved 23 July 2013.Wilson, D.E.; Hanlon, E. (2010). " Lemur catta (Primates: Lemuridae)" (PDF). Mammalian Species. 42 (854): 58–74. doi: 10.1644/854.1. S2CID 20361726. Archived (PDF) from the original on 2013-05-10. a b Dixson, AF (1989). "Sexual Selection, Genital Morphology, and Copulatory Behavior in Male Galagos". International Journal of Primatology. 1. 10: 47–55. doi: 10.1007/bf02735703. S2CID 1129069.