Alligator snapping turtles can live for over 150 years. Scientists know this because some of the turtles had musket balls in their stomachs.
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Sharks, like other fish, have their reproductive organs in their chests.
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Cows can sleep standing up, but they can only dream lying down.
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Using a remote-controlled camera, biologists caught dolphins getting high by sucking on puffer fish. They were even caught passing the puffer fish around.
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Christmas Island has bridges for crabs to stop them getting run over during the mass migration.
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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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