Check out this neat video highlighting how frog-eating bats are using frog mating calls to know where to pick up dinner:
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tags: evolution, evolutionary biology, behavioral ecology, animal behavior, molecular ecology, parental care, mating systems, monogamy, sexual selection, frogs, poison dart frogs, Dendrobatidae, Ranitomeya, researchblogging.org,peer-reviewed research, peer-reviewed paper, journal club
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This is a very intriguing aspect. It goes down to Charles Darwins Theory on Natural selection. That nature chooses its best fit to be preserved for the next generation. I am sure the type of frogs also or will develop a resistance intelligence to distinguish between their mating sounds to mimicked sounds from the bats.