Blue whale arteries are large enough for humans to swim through and their hearts are the size of cars.
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Allegedly, Chrysippus, the Greek philosopher, died of laughter after getting his donkey drunk and watching it try to eat figs.
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A scorpion can hold its breath for up to 6 days.
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Sloths take two weeks to digest their food.
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Alligator snapping turtles can live for over 150 years. Scientists know this because some of the turtles had musket balls in their stomachs.
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