Australian Graham Barker has been collecting his own belly button fluff every day since 1984 - keeping it in storage jars.
15
15% of snails survive digestion by birds and are found alive in their droppings, potentially leading to the spread of snail populations.
1
Cymothoa exigua is a type of parasite that enters through fish's gills, eats their tongue, and then replaces it.
6
Sniffologists have the job of sniffing armpits.
4
Cockroaches can live for 9 days after their head has been cut off.
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