Like dry leaves or shapes of animals. How do they know what to mimic??
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It’s not a matter of “knowing what to mimic” it’s more natural selection at work. If a butterfly is red on a green leaf it’s rather easy for predators to see.
Those who mutated more green had a bigger chance at survival.
The same goes for shapes. A leaf shaped wing is harder to make out than wings that aren’t.
Why are there sharply colored butterflies then if they are easier to see for predators then?
Well a potential partner has the same problems a predator has. Here it’s the procreation of the species that has won in the grabs evolution.
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