.mw-parser-output .hidden-begin{box-sizing:border-box;width:100%;padding:5px;border:none;font-size:95%}.mw-parser-output .hidden-title{font-weight:bold;line-height:1.6;text-align:left}.mw-parser-output .hidden-content{text-align:left}You can help expand this article with text translated from the corresponding article in German. (March 2013) Click [show] for important translation instructions. View a machine-translated version of the German article. Machine translation, like DeepL or Google Translate, is a useful starting point for translations, but translators must revise errors as necessary and confirm that the translation is accurate, rather than simply copy-pasting machine-translated text into the English Wikipedia. Consider adding a topic to this template: there are already 9,028 articles in the main category, and specifying|topic= will aid in categorization. Do not translate text that appears unreliable or low-quality. If possible, verify the text with references provided in the foreign-language article. You must provide copyright attribution in the edit summary accompanying your translation by providing an interlanguage link to the source of your translation. A model attribution edit summary is Content in this edit is translated from the existing German Wikipedia article at [[:de:Musculus retractor penis]]; see its history for attribution. You should also add the template ((Translated|de|Musculus retractor penis)) to the talk page. For more guidance, see Wikipedia:Translation.

In some animals, the male penis possesses a muscle enabling retraction into the prepuce.

In particular animals

The retractor penis muscle occurs in marsupials and carnivorans, but it is absent in humans.[1] A stag's penis forms an S-shaped curve when it is not erect, and is retracted into its preputial sheath by the retractor penis muscle.[2]

In Tandonia, the retractor penis inserts at the boundary between the penis and epiphallus.[3]

In stallions, the retractor penis muscle is relatively underdeveloped.[4] The retractor muscle contracts to retract the penis into the sheath and relaxes to allow the penis to extend from the sheath.[5]

In bulls, protrusion is not affected much by erection, but more by relaxation of the retractor penis muscle and straightening of the sigmoid flexure.[4]

References

  1. ^ Bassett, E. Gertrude. "Observations on the retractor clitoridis and retractor penis muscles of mammals with special reference to the ewe." Journal of anatomy 95.Pt 1 (1961): 61.
  2. ^ Rue III, Leonard Lee (2004-11-01). The Deer of North America. Globe Pequot. p. 312. ISBN 9781592284658. Retrieved 2 March 2013.
  3. ^ "Genus summary for Tandonia". AnimalBase, last modified 23 May 2010, accessed 26 August 2010.
  4. ^ a b Sarkar, A. (2003). Sexual Behaviour In Animals. Discovery Publishing House. ISBN 978-81-7141-746-9.
  5. ^ "The Stallion: Breeding Soundness Examination & Reproductive Anatomy". University of Wisconsin-Madison. Archived from the original on 2007-07-16. Retrieved 7 July 2007.
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