Animals with Cocks - Coloring Book

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Voss, R.S.; Linzey, A.V. (1981). "Comparative gross morphology of male accessory glands among Neotropical Muridae (Mammalia: Rodentia) with comments on systematic implications". Miscellaneous Publications of the University of Michigan Museum of Zoology. 159: 1–41. hdl: 2027.42/56403.

An adult elephant has the largest penis of any land animal. [131] [ self-published source?] An elephant's penis can reach a length of 100cm (40in) and a diameter of 16cm (6in) at the base. [ citation needed] It is S-shaped when fully erect and has a Y-shaped orifice. [132] During musth, a male elephant may urinate with his penis still in the sheath, which causes the urine to spray on the hind legs. [133] [134] An elephant's penis is very mobile, being able to move independently of the male's pelvis, [135] and the penis curves forward and upward prior to mounting another elephant. [70] Wikimedia Commons has media related to Mammal penis. External male genitalia of a Labrador Retriever In Drymoreomys, there are three digits at the tip of the penis, of which the central one is the largest. [99] The Stallion: Breeding Soundness Examination & Reproductive Anatomy". University of Wisconsin-Madison. Archived from the original on 2007-07-16 . Retrieved 7 July 2007. Unlike other species that use a similar process—butterflies, mites, beetles—males of these species don’t have a similar penetrative organ, only the females do, says Willingham. A Temporary ToolSarkar, Amita (1 January 2003). Sexual Behaviour In Animals. Discovery Publishing House. ISBN 978-81-7141-746-9 . Retrieved 20 July 2013. In giant anteaters, the (retracted) penis and testes are located internally between the rectum and urinary bladder. [136]

Szykman, M.; Van Horn, R. C.; Engh, A.L. Boydston; Holekamp, K. E. (2007). "Courtship and mating in free-living spotted hyenas" (PDF). Behaviour. 144 (7): 815–846. CiteSeerX 10.1.1.630.5755. doi: 10.1163/156853907781476418. Archived (PDF) from the original on 2012-11-30. Smithers, Reay H. N. (March 2008). Smithers' Mammals of Southern Africa: A Field Guide. Penguin Random House South Africa. ISBN 9781868725502. Archived from the original on 2013-10-11 . Retrieved 2013-06-22.There's not a binary that is categorically one thing or the other when it comes to genitalia,” says Willingham. The blue whale might have the world’s biggest penis, but size is relative. Barnacles have the biggest penis-to-body size ratio, with genitalia nearly eight-times their total body length. Affanni, J. M.; Cervino, C. O.; Marcos, H. J. A. (2001). "Absence of penile erections during paradoxical sleep. Peculiar penile events during wakefulness and slow wave sleep in the armadillo". Journal of Sleep Research. 10 (3): 219–228. doi: 10.1046/j.1365-2869.2001.00259.x. hdl: 20.500.12110/paper_09621105_v10_n3_p219_Affanni. PMID 11696075. S2CID 22421482. King, Anna (2001). "Discoveries about Marsupial Reproduction". Iowa State University Biology Dept. Archived from the original on September 5, 2012 . Retrieved 2012-11-22.

Austin, Colin Russell; Short, Roger Valentine (21 March 1985). Reproduction in Mammals: Volume 4, Reproductive Fitness. Cambridge University Press. ISBN 978-0-521-31984-3 . Retrieved 22 July 2013. Renfree, Marilyn; Hugh Tyndale-Biscoe (1987-01-30). Reproductive Physiology of Marsupials. Cambridge University Press. ISBN 9780521337922. Archived from the original on 11 January 2014 . Retrieved 5 May 2013. Hoffmeister, Donald F. (2002). Mammals of Illinois. University of Illinois Press. ISBN 978-0-252-07083-9 . Retrieved 22 July 2013. Unlike other squirrel species, red squirrels have long, thin, and narrow penises, without a prominent baculum. [102] [103] Flatworms are hermaphrodites, meaning they have both male and female sex organs, which triggers some seriously odd reproductive behavior. When trying to impregnate another worm, for example, a flatworm tries to pierce the skin of the other using its penis. Experts term this heated competition " penis fencing": The first to successfully impregnate the other while fending off advances becomes the de facto male, who wins because he won't have to expend the energy required to carry eggs.

A penis ( / ˈ p iː n ɪ s/; pl.: penises or penes) is the primary sexual organ that male animals use to inseminate females (or hermaphrodites) during copulation. [1] [2] Such organs occur in many animals, both vertebrate and invertebrate, but males do not bear a penis in every animal species. Furthermore, penises are not necessarily homologous. Marvalee H. Wake (15 September 1992). Hyman's Comparative Vertebrate Anatomy. University of Chicago Press. p.583. ISBN 978-0-226-87013-7. Archived from the original on 31 December 2013 . Retrieved 23 July 2013. Lukefahr, Steven D.; Cheeke, Peter R.; Patton, Nephi M. (2013). Rabbit Production. CABI. ISBN 978-1-78064-012-9 . Retrieved 20 July 2013.

Reena Mathur (2009). Animal Behaviour 3/e. Rastogi Publications. ISBN 978-81-7133-747-7. Archived from the original on 26 March 2014 . Retrieved 23 July 2013. Hunsaker, Don II (2 December 2012). The Biology of Marsupials. Elsevier Science. ISBN 978-0-323-14620-3 . Retrieved 18 February 2014.Würsig, Bernd; Wursig, Melany (2009-07-17). The Dusky Dolphin: Master Acrobat Off Different Shores - Bernd G. Würsig, Bernd Wursig, Melany Wursig. ISBN 9780080920351. Archived from the original on 2013-10-11 . Retrieved 2012-11-22. 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. Penises have been a longstanding subject of scientific fascination, and they’re far more studied than vaginas. One explanation for this research gap, says Willingham, is “because of who has been asking the questions until quite recently, and who's been deciding how those questions should be answered.” Online Etymology Dictionary". Etymonline.com. Archived from the original on 2011-06-06 . Retrieved 2011-05-28. Bed bugs are famous for their aggressive, stabbing sex. Sometimes, overzealous males kill females with their saber-like penis in the process.