The internal structures of the penis consist mainly of cavernous, erectile tissue, which is a collection of blood sinusoids separated by sheets of connective tissue (trabeculae). Some mammals have a lot of erectile tissue relative to connective tissue, for example horses. Because of this a horse's penis can enlarge more than a bull's penis. The urethra is on the ventral side of the body of the penis. As a general rule, a mammal's penis is proportional to its body size, but this varies greatly between species–even between closely related ones. For example, an adult gorilla's erect penis is about 4.5cm (1.8in) in length; an adult chimpanzee, significantly smaller (in body size) than a gorilla, has a penis size about double that of the gorilla. In comparison, the human penis is larger than that of any other primate, both in proportion to body size and in absolute terms. [19] Artiodactyls King, B. M. (2020). Average-size erect penis: Fiction, fact, and the need for counseling [Abstract].

Mondaini, N., et al. (2002). Penile length is normal in most men seeking penile lengthening procedures. Frank B. Gill (6 October 2006). Ornithology. Macmillan. pp.414–. ISBN 978-0-7167-4983-7. Archived from the original on 7 January 2014 . Retrieved 5 December 2012. Cetaceans' reproductive organs are located inside the body. Male cetaceans (whales, dolphins, and porpoises) have two slits, the genital groove concealing the penis and one further behind for the anus. [46] [47] [48] [49] Cetaceans have fibroelastic penises, similar to those of Artiodactyla. [50] The tapering tip of the cetacean penis is called the pars intrapraeputialis or terminal cone. [51] The blue whale has the largest penis of any organism on the planet, typically measuring 2.4–3.0m (8–10ft). [52] Accurate measurements are difficult to take because its erect length can only be observed during mating, [53] which occurs underwater. The penis on a right whale can be up to 2.7m (8.9ft) – the testes, at up to 2m (6ft 7in) in length, 78cm (2ft 7in) in diameter, and weighing up to 238kg (525lb), are also by far the largest of any animal on Earth. [54] José Roberto Moreira; Katia Maria P.M.B. Ferraz; Emilio A. Herrera (15 August 2012). Capybara: Biology, Use and Conservation of an Exceptional Neotropical Species. Springer. ISBN 978-1-4614-4000-0. Archived from the original on 26 March 2014 . Retrieved 25 July 2013. Some features of the accessory glands in the male genital region vary among oryzomyines. In Transandinomys talamancae, [98] a single pair of preputial glands is present at the penis. As is usual for sigmodontines, there are two pairs of ventral prostate glands and a single pair of anterior and dorsal prostate glands. Part of the end of the vesicular gland is irregularly folded, not smooth as in most oryzomyines. [99]A bone called the baculum or os penis is present in most mammals but absent in humans, cattle and horses. New data on armadillos (Xenarthra: Dasypodidae) for Central Patagonia, Argentina." Agustin M. Abba, et al. Verts, B. J.; Carraway, Leslie N. (1998). Land Mammals of Oregon. University of California Press. p.41. ISBN 978-0-520-21199-5 . Retrieved 20 July 2013.

Catch a Lingcod": Willy will send you a letter on the 13th of Winter, year 2, asking you to catch and bring him a Lingcod. The reward is data-sort-value="550"> 550g and 1 Friendship heart. Veale, D.; Miles, S.; Bramley, S.; Muir, G.; Hodsoll, J. (2015). "Am I normal? A systematic review and construction of nomograms for flaccid and erect penis length and circumference in up to 15 521 men". BJU International. 115 (6): 978–986. doi: 10.1111/bju.13010. PMID 25487360. S2CID 36836535. The researchers concluded: “Only men with a flaccid length of less than 4 cm (1.6 in), or a stretched or erect length of less than 7.5 cm (3 in) should be considered candidates for penile lengthening.” Micropenis and buried penis The researchers concluded that the average penis size was 8.8 cm (3.5 in) when flaccid and 12.9 cm (5.1 in) when erect. Gus will sell an unlimited amount of Crab Cakes at the Saloon for data-sort-value="550"> 550g each starting on the day of the cutscene and for 3 days after. Mayor Lewis will comment that he's smelled crab "all afternoon" the day the event is viewed.Fay, F.H. (1985). "Odobenus rosmarus". Mammalian Species (238): 1–7. doi: 10.2307/3503810. JSTOR 3503810. Archived from the original on 2013-09-15. https://www.researchgate.net/publication/318023027_A_Structured_Review_and_Critical_Analysis_of_Male_Perceptions_of_the_Penis_A_Comparison_between_Heterosexual_Men_and_Men_Who_Have_Sex_with_Men_MSM Percequillo, A.R.; Weksler, M.; Costa, L.P. (2011). "A new genus and species of rodent from the Brazilian Atlantic Forest (Rodentia: Cricetidae: Sigmodontinae: Oryzomyini), with comments on oryzomyine biogeography". Zoological Journal of the Linnean Society. 161 (2): 357–390. doi: 10.1111/j.1096-3642.2010.00643.x.