Dolphins sometimes have fun by blowing bubbles and creating rings of air underwater, which they then swim through.
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It has been estimated that a bite from a grizzly bear can crush a bowling ball.
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If a vampire bat goes 2 days without drinking blood, they can die. However, well fed female bats will puke up blood and share it with other bats that they like in exchange for grooming.
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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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