Trickery helps many organisms to survive. In fact, deceit is more the rule than the exception in nature. In every species, the animal that can put one over on its competitor, its predator or its prey has the edge on survival. Tails become heads and heads tails. A dead leaf comes to life, suddenly rising on insect legs. A cuckoo plays ventriloquist, throwing its voice to disguise its location. An angler fish entices prey with dummy bait that it part...