Female hyenas don't have penises, but it sure looks like they do - and we still aren't quite sure why.nnTo start using Tab for a Cause, go t...
Female hyenas don't have penises, but it sure looks like they do - and we still aren't quite sure why.nnTo start using Tab for a Cause, go to: http://tabforacause.org/r/minuteearth2nnThanks also to our supporters on https://www.patreon.com/MinuteEarthn___________________________________________nnTo learn more, start your googling with these keywords: nPseudopenis: a structure that resembles a penis but is developmentally (and functionally) differentnMasculinization: the process by which female genitalia is made to appear more like male genitalian___________________________________________nnIf you liked this week’s video, you might also like: nWhy It Sucks to Be a Male Hyenanhttps://www.youtube.com/watch?v=PBCNWmU5apEnnHyena having a baby at the Buffalo Zoonhttps://www.youtube.com/watch?v=7rd7TvoPtWMn_________________________________________nnSubscribe to MinuteEarth on YouTube: http://goo.gl/EpIDGdnSupport us on Patreon: https://goo.gl/ZVgLQZnAnd visit our website: https://www.minuteearth.com/nnSay hello on Facebook: http://goo.gl/FpAvo6nAnd Twitter: http://goo.gl/Y1aWVCnnAnd download our videos on itunes: https://goo.gl/sfwS6nn___________________________________________nnCredits (and Twitter handles):nScript Writer: Kate Yoshida (@KateYoshida)nScript Editor: Alex Reich (@alexhreich)nVideo Illustrator: Ever Salazar (@eversalazar)nVideo Director: Kate Yoshida (@KateYoshida)nVideo Narrator: Kate Yoshida (@KateYoshida)nWith Contributions From: Henry Reich, Emily Elert, Peter Reich, David Goldenberg nMusic by: Nathaniel Schroeder: http://www.soundcloud.com/drschroedernnVideo Credits: nSpotted Hyenas Mating - Olivia SpagnuolonnImage Credits:nFemale Spotted Hyena - Kate YoshidanSpotted Hyena Pseudopenis - Kay HolekampnnStriped Hyena (Hyaena hyaena) - Flickr user Jeannhttps://www.flickr.com/photos/7326810@N08/3091611374nnBrown Hyena (Parahyaena brunnea) - Bernard DUPONTnhttps://www.flickr.com/photos/berniedup/6472940707/nnProteles cristatus - Dominik Käuferlenhttps://commons.wikimedia.org/wiki/File:Proteles_cristatus1.jpgnnSquirrel monkey - Wikimedia user Megapixienhttps://commons.wikimedia.org/wiki/File:Squirrel_monkey-_fuji.jpgnnRing tailed lemur - Wikimedia user Sannse nhttps://commons.wikimedia.org/wiki/File:Ring_tailed_lemur_and_twins.jpgnnFossa - Ran Kirliannhttps://commons.wikimedia.org/wiki/File:Cryptoprocta_Ferox.JPGnnBinturong - Tassilo Raunhttps://commons.wikimedia.org/wiki/File:Binturong_in_Overloon.jpgnn___________________________________________nnReferences:nnCunha GR, Risbridger G, Wang H, Place NJ, Grumbach M, Cunha TJ, Weldele M, Conley AJ, Barcellos D, Agarwal S, Bhargava A, Drea C, Hammond GL, Siiteri P, Coscia EM, McPhaul MJ, Baskin LS, Glickman SE. (2014) Development of the external genitalia: perspectives from the spotted hyena (Crocuta crocuta). Differentiation. 87(1-2):4-22. http://www.sciencedirect.com/science/article/pii/S030146811300087X?via%3DihubnnFrank LG (1997) Evolution of genital masculinization: why do female hyenas have such a large 'penis'? Trends Ecol. Evol. 12:58-62. http://www.cell.com/trends/ecology-evolution/abstract/S0169-5347(96)10063-XnnFrank LG and Glickman SE (1994) Giving birth through a penile clitoris: parturition and dystocia in the spotted hyaena (Crocuta crocuta). J. Zool. 234:659–665. http://onlinelibrary.wiley.com/doi/10.1111/j.1469-7998.1994.tb04871.x/abstractnnFrank LG, Weldele ML, and Glickman SE (1995) Masculinization costs in hyaenas. Nature 377:584–585. http://www.nature.com/nature/journal/v377/n6550/abs/377584b0.html?foxtrotcallback=truennGlickman SE, Cunha GR, Drea CM, Conley AJ and Place NJ (2006) Mammalian sexual differentiation: lessons from the spotted hyena. rends in Endocrinology and Metabolism 17 (9): 349–356. http://www.sciencedirect.com/science/article/pii/S1043276006001767nnHolekamp, KE, personal communication. August and September 2017.nnMuller MN and Wrangham R (2002) Sexual Mimicry in Hyenas. The Quarterly Review of Biology 77 (1):3-16. http://www.journals.uchicago.edu/doi/abs/10.1086/339199?journalCode=qrb Less
