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These bats imitate hornets to avoid being eaten by owls

National Geographic

Mouse-eared bats make sounds like buzzing hornets, in an apparent attempt to avoid avian predation—a remarkable adaptation not previously seen in a mammal.

Mimicry is widespread in the animal kingdom.

Some caterpillars can make themselves look like venomous snakes. The chicks of an Amazonian bird called the cinereous mourner shapeshift into poisonous larvae. Flower-loving hoverflies evolved to look just like stinging, unpalatable wasps.

These are all examples of Batesian mimicry, an evolutionary trick which leads a relatively harmless animal to copy a more dangerous species to scare off would-be predators.

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