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 oldest known animal in the world was 'Ming' the 405 year old clam, discovered in 2007.
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Termites are being researched as a possible renewable energy source as they can produce up to 2 litres of hydrogen from ingesting a single sheet of paper, making them one of the planet’s most efficient bioreactors.
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If a vampire bat goes 2 days without drinking blood, they can die. However, well fed female bats will puke up blood and share it with other bats that they like in exchange for grooming.
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A lion in the wild usually makes no more than twenty kills a year.
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Dire wolves actually existed, living up to 10,000 years ago before going extinct.
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