Cymothoa exigua is a type of parasite that enters through fish's gills, eats their tongue, and then replaces it.
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Mosquitoes don't just bite you, they also pee on you.
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Cockroaches can live for 9 days after their head has been cut off.
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Australian Graham Barker has been collecting his own belly button fluff every day since 1984 - keeping it in storage jars.
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