Eli5 How do animals and insects get so specific with their camouflage?

Question

Like dry leaves or shapes of animals. How do they know what to mimic??

In: 283

Answer 1

Millions of years of RNG where the prize for winning was having babies who look similar to you while the losers became bird food

At the same time the birds became better and better at spotting the camouflaged bugs leading to an arms race between predators and prey to see and be unseen