• ryannathans
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    10 months ago

    Don’t echidnas and platypuses also lay eggs and feed their young milk?

    • 1rre@discuss.tchncs.de
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      10 months ago

      Yes, but all mammals by definition produce milk

      Thing is this isn’t even the second time mothers secreting food for babies has evolved - some birds do it as well as mammals (birds are basically just mammals 2.0 really, warm blooded, big brains, produce milk, highly active)

    • Turun@feddit.de
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      10 months ago

      Yes, and?

      Edit: before this we knew of two groups of alive things that produce milk: mammals and monotremes (egg laying mammals). Finding an amphibian that also does it is very interesting.