Why Don’t Humans Have a Penis Bone?


Many species, including some of our closest primate relatives, have penis bones. Why don’t we?

Two-Foot Penis Bones: How Walruses Stay Erect In Freezing Water – https://youtu.be/QCbgT2LS4sQ

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Why humans lost their penis bone
“Despite slang terms that imply otherwise, the human penis contains no bones. The same cannot be said for many of our closest evolutionary relatives: Chimpanzees and bonobos both have penis bones (a macaque one is pictured), also known as bacula.”

South African Doctors Complete Second Successful Penis Transplant
“In December 2014, surgeons in South Africa performed the world’s first successful penile transplant, attaching a donor organ to a young man who lost his penis in a botched circumcision ritual. The transplant was entirely successful, restoring both sexual and urinary functions, and the recipient is doing fine today.”

Social Competition Can Cause Duck Penises to Grow Longer, Faster
“Chemical signals released by the individuals around us can have a profound effect on our physical states. Now, new research on ducks finds that social environment can even impact penis size.”

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Special thanks to Julian Huguet for hosting and writing this episode of Seeker!
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