How some bugs are like bad Elvis impersonators

For many species, mimicry is the key to survival. Good thing they don't have to be all that great at it.

Wasp
(Image credit: (Illustration Lauren Hansen | Photo courtesy Corbis))

If you're an Elvis impersonator, your impression better be pretty spot-on if you want to avoid getting heckled by the audience. But if you're any one of a number of animals that mimic other species to survive, a poor impression can mean death. Thankfully, a new study suggests that nature can be pretty forgiving of an imperfect imitation.

Some animals defend themselves from predators through what biologists call Batesian mimicry: they take on the appearance of another prey species that's poisonous, dangerous in some other way, or just plain unpalatable. Predators avoid the model species for good reason, as well as the harmless mimic — fooled by a sheep in wolf's clothing.

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