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Platypuses
(mander.xyz)
A place for majestic STEMLORD peacocking, as well as memes about the realities of working in a lab.
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This is a science community. We use the Dawkins definition of meme.
They also don't have nipples (though do have mammary glands) and mother platypuses basically sweat milk through their skin for the pups to collect off their fur
what the fuck
So I guess that's partly why most mammals' milk glands are in the abdomen. Other than primates, I only know that elephants also have mammaries on the breasts
You got an ancestor that did that too. Part of why platypuses are so damn weird is because mammalian ancestors kept facing evolutionary bottlenecks. Platypuses are more like proto mammals than us placentals