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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A koi fish, named "Hanako", was owned by several individuals over many years and lived to be 226 years old, dying in 1977.
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The largest breed of rabbit is the Flemish Giant.
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