The first known contraceptive was crocodile dung, used by Egyptians in 2000 B.C.
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Squirrels will sometimes adopt orphaned baby squirrels that they’re related to.
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Cymothoa exigua is a type of parasite that enters through fish's gills, eats their tongue, and then replaces it.
6
Cows can sleep standing up, but they can only dream lying down.
745
Cows as they are today never existed in the wild and were domesticated from aurochs some 10,500 years ago.
6