Australian Graham Barker has been collecting his own belly button fluff every day since 1984 - keeping it in storage jars.
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The 'Bicycle Tree', found near Brig o' Turk in Scotland, has consumed an entire bike that now hangs out of its bark.
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Obsessive nose picking is called Rhinotillexomania.
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Sloths take two weeks to digest their food.
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Honeypot ants are a unique insect that use their own bodies as living storage pots of honey.
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