Cymothoa exigua is a type of parasite that enters through fish's gills, eats their tongue, and then replaces it.
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Christmas Island has bridges for crabs to stop them getting run over during the mass migration.
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Crows living in some urban areas drop nuts into traffic to let the passing cars crush them, then they wait for the red lights to stop the traffic so they can grab and eat it.
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Dolphins sometimes have fun by blowing bubbles and creating rings of air underwater, which they then swim through.
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Worker bees must visit around 4,000 flowers in order to make one tablespoon of honey.
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There's a phone app called RoboRoach that allows you to remotely control a cockroach through a chip that you to manually implant into the unwitting critter.
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