I understand learned behaviors is something’s brain getting bigger and gaining some IQ points. But how does the physical appearance adapt in ways to imitate a predator that benefits the host? How does the body know what a predator looks like?
In: Biology
Short answer is evolution.
Imagine there’s 3 different looking caterpillars, one brown, one striped and one pink. The brown looks like bark on a tree so it’s camouflaged and only get eaten by some animals that can see it. The striped looks like a snake so no animal wants to go near it and it doesn’t get eaten. The pink is obvious and gets eaten. When it’s time to reproduce, there’s more of the stripe snake looking one, so the next generation has twice as many snake looking caterpillars than pink. Repeat that over and over again, with each generation the ones that look more like a predator survive to pass on the genes
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