ELI5: Explain Like I'm 5

Müllerian mimicry

Müllerian mimicry is a sneaky trick that some animals use to survive and stay safe from predators. Imagine you have a friend who is always copying everything you do. They wear the same clothes as you, do the same things as you, and even talk like you. This is exactly what some animals do to stay safe from predators.

In this special animal world, there are creatures like bees, wasps, and butterflies that have bright and beautiful colors that say "Hey, look at me, I'm here!" In contrast, other animals also have bright and beautiful colors but they are not good for eating, maybe they are dangerous or taste terrible. So, some animals that are delicious to predators copy the look of these unappetizing animals, and this is called Müllerian mimicry.

For example, imagine a bird that eats butterflies. This bird has learned that one kind of butterfly with yellow and black stripes tastes terrible and makes it feel sick. The bird also sees another kind of butterfly with the same yellow and black stripes that looks very similar but is not bad to eat. Since the bird can't tell the difference between the two, it learns to avoid all yellow and black striped butterflies. So, the butterfly that is not yummy for the bird benefits from its resemblance to the bad kind of butterfly, making the bird think they are both the same and not tasty.

To put it simply, Müllerian mimicry is when animals that taste good copy the look of animals that taste bad, to trick predators into thinking they’re not yummy. It’s a clever way for animals to protect themselves from getting eaten.
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