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Anon blows his dad's mind (sh.itjust.works)
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[-] ArbitraryValue@sh.itjust.works 23 points 3 days ago* (last edited 3 days ago)

Do male mice have nipples? Why?


That was my take-home open-book exam from a somewhat eccentric developmental biology professor back when I was in college. I remember that the answer is no (although they still have mammary tissue and can get breast cancer) but not why.

[-] ramenshaman@lemmy.world 15 points 3 days ago

Apparently male horses also do not have nipples. I learned that just now when I was searching for "male mice nipples". TIL. I hope no one ever finds my search history.

[-] SGforce@lemmy.ca 10 points 3 days ago

They would probably rub on the ground

[-] FinjaminPoach@lemmy.world 9 points 3 days ago

Or, or, the male horses with nipples spent too much time poking their own nipples with their penis for sexual stimulation and it means they removed themselves from the gene pool.

This means male horses selected for less and less prominent nipples until they became completely flat chested.

[-] Peppycito@sh.itjust.works 8 points 3 days ago

I like the way you think.

this post was submitted on 12 Mar 2026
674 points (99.4% liked)

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