My question: mother animals in the wild don't leave their milk lying
around to turn into cheese.

I only have one idea: having grown up with five younger siblings, I am aware of
something I call "baby cheese" -- cheese deposits behind a baby's ears, where
the milk ran down as it drank. Of course, the mother does clean that up,
whether human or (presumably) animal, so it is of limited use to a fly.

Jie-san Laushi

Huodau lau, xuedau lau, hai you sanfen xue bulai
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