Crafty Australian Crayfish Cheat

Australian and British scientists have found how puny crayfish cheat. Biologists explain that weak males cheat by intimidating stronger foes with their large claws. However, this shouldn't work because the tough guys should get wise. Wilson shows that large claws are risky; they make it harder to evade predators. Cheats get away with it because crayfish wouldn't bother to have big claws unless they really meant it.

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