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.
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)
Don’t echidnas and platypuses also lay eggs and feed their young milk?
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.
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)
What birds give milk to their kids?
Pigeons/doves, flamingos, penguins
Birds have big brains?
They don’t, but their neuron density is similar to some primates.