Cymothoa exigua is a type of parasite that enters through fish's gills, eats their tongue, and then replaces it.
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Leonardo Da Vinci loved animals so much that he used to buy caged animals at the market just to set them free.
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Vanilla flavoring is sometimes made with an ingredient from beaver pee.
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In 2005, in Africa, it was reported that three lions rescued a 12-year-old girl from kidnappers and guarded her for half a day until help came.
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The station master and operating officer at the Kishi Station, Japan, is a cat!
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