The first known contraceptive was crocodile dung, used by Egyptians in 2000 B.C.
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Early American humans hunted car-size armadillos and used their shells for houses.
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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.
13
It has been estimated that a bite from a grizzly bear can crush a bowling ball.
11