Cymothoa exigua is a type of parasite that enters through fish's gills, eats their tongue, and then replaces it.
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Condoms were originally made of animal intestines or linen.
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An Indian man known as "Snake Manu" can put small snakes, including deadly cobras, into his mouth and pass them out through his nose.
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In 1386, a pig in France was executed by public hanging for the murder of a child.
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