Cymothoa exigua is a type of parasite that enters through fish's gills, eats their tongue, and then replaces it.
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The first known contraceptive was crocodile dung, used by Egyptians in 2000 B.C.
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Dolphins can rapidly heal from extreme injuries, such as shark bites, and regenerate their original body shape.
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The most expensive cow in the world was sold in 2009 for $1.2 million.
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Allegedly, Chrysippus, the Greek philosopher, died of laughter after getting his donkey drunk and watching it try to eat figs.
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