I can't get me a good night's sleep with that night market going on... eh, but that's okay. I'm flexible.” Measurements vary, with studies that rely on self-measurement reporting a significantly higher average than those with a health professional measuring. As of 2015 [update], a systematic review of 15,521 men, who were measured by health professionals rather than themselves, concluded that the average length of an erect human penis is 13.12cm (5.17 inches) long, while the average circumference of an erect human penis is 11.66cm (4.59 inches). [2] A 1996 study of flaccid length found a mean of 3.5 inches (8.9cm) when measured by staff. [3] Flaccid penis length can sometimes be a poor predictor of erect length. An adult penis that is abnormally small but otherwise normally formed is referred to in medicine as a micropenis, with the cutoff usually being defined as around 3 inches (7.6 cm). A human penis, flaccid and erect. Flaccid length is a poor predictor for erect length.

Weksler, M. (2006). "Phylogenetic relationships of oryzomyine rodents (Muroidea: Sigmodontinae): separate and combined analyses of morphological and molecular data". Bulletin of the American Museum of Natural History. 296: 1–149. doi: 10.1206/0003-0090(2006)296[0001:PROORM]2.0.CO;2. hdl: 2246/5777. S2CID 86057173. Kohler-Rollefson, I. U. (12 April 1991). " Camelus dromedarius" (PDF). Mammalian Species (375): 1–8. doi: 10.2307/3504297. JSTOR 3504297. Archived from the original (PDF) on 21 May 2013. A 2014 review looked at measurements taken by healthcare professionals for up to 15,521 males aged 17 and over.

Philip Caputo (1 June 2003). Ghosts of Tsavo: Stalking the Mystery Lions of East Africa. Adventure Press, National Geographic. ISBN 978-0-7922-4100-3 . Retrieved 23 July 2013. Male walruses possess the largest penis bones of any land mammal, both in absolute size and relative to body size. [84] [85] 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.

According to a 2019 report, motivation for seeking treatment often focuses on self-image, fears of inadequacy, a desire to impress others, and other psychosocial factors. For some perspective, an erect penis of 6.3 inches falls into the 95 percentile, according to 2014 research, meaning that only 5 out of 100 people would have a penis longer than 6.3 inches. William F. Perrin; Bernd Wursig; J. G.M. Thewissen (26 February 2009). Encyclopedia of Marine Mammals. Academic Press. ISBN 978-0-08-091993-5. Archived from the original on 11 October 2013 . Retrieved 28 June 2013. One study (published in 1996) found the mean flaccid penis length to be 3.5 inches (8.9cm) (measured by staff). [3] A review of several studies found average flaccid length to be 9–10cm (3.5–3.9in). [6] Length of the flaccid penis does not necessarily correspond to length of the erect penis; some smaller flaccid penises grow much longer, while some larger flaccid penises grow comparatively less. [7] Are you setting up a grange display, [Player]? It's your chance to show off all the good produce from [farm name]!”

a b R. F. Ewer (1998). The Carnivores. Cornell University Press. p.116. ISBN 978-0-8014-8493-3. Archived from the original on 26 March 2014 . Retrieved 23 July 2013.

The Cowper’s glands produce a fluid called pre-ejaculate or precum. This fluid prepares your urethra for ejaculation (coming). It reduces friction so your semen can move more easily. The Cowper’s glands are under the prostate and attach to your urethra. They’re also called bulbourethral glands. Simpson P, et al. (2017). 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). Johnston, S.D.; Smith, B.; Pyne, M.; Stenzel, D.; Holt, W.V. (2007). "One-Sided Ejaculation of Echidna Sperm Bundles ( Tachyglossus aculeatus)" (PDF). Am. Nat. 170 (6): E162–4. doi: 10.1086/522847. PMID 18171162. S2CID 40632746.Larry Vogelnest; Rupert Woods (18 August 2008). Medicine of Australian Mammals. Csiro Publishing. ISBN 978-0-643-09928-9. Archived from the original on 26 March 2014 . Retrieved 23 July 2013. Munroe, Graham; Weese, Scott (15 March 2011). Equine Clinical Medicine, Surgery and Reproduction. Manson Publishing. ISBN 978-1-84076-608-0 . Retrieved 18 February 2014. Wilson, Don E.; Reeder, DeeAnn M. (16 November 2005). Mammal Species of the World: A Taxonomic and Geographic Reference. JHU Press. ISBN 978-0801882210 . Retrieved 20 July 2013.

Sarkar, Amita (1 January 2003). Sexual Behaviour In Animals. Discovery Publishing House. ISBN 978-81-7141-746-9 . Retrieved 20 July 2013. Friderun Ankel-Simons (27 July 2010). Primate Anatomy: An Introduction. Academic Press. ISBN 978-0-08-046911-9. Archived from the original on 26 March 2014 . Retrieved 23 July 2013.Willy's shop is closed on Saturday while he's out fishing unless it's raining. Willy never visits the Beach Resort on Ginger Island, though he ferries other villagers to and from the Island. Dale R. McCullough (1969). The tule elk: its history, behavior, and ecology. University of California Press. ISBN 978-0-520-01921-8 . Retrieved 22 July 2013. Testicles: The small organs inside your scrotum mostly exist to make sperm. As your testosterone levels fall, sperm production slows and they shrink. Kim Long (1995). Squirrels: A Wildlife Handbook. Big Earth Publishing. p.127. ISBN 978-1-55566-152-6. Archived from the original on 26 March 2014 . Retrieved 23 July 2013. Veale D, et al. (2014). Am I normal? A systematic review and construction of nomograms for flaccid and erect penis length and circumference in up to 15521 men.