Sniffologists have the job of sniffing armpits.
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Cymothoa exigua is a type of parasite that enters through fish's gills, eats their tongue, and then replaces it.
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15% of snails survive digestion by birds and are found alive in their droppings, potentially leading to the spread of snail populations.
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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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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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