Dogs have been man's pet for over 14,000 years.
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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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Condoms were originally made of animal intestines or linen.
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A scorpion can hold its breath for up to 6 days.
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Mosquitoes don't just bite you, they also pee on you.
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A hippo sleeping underwater automatically rises to the surface every ~4 minutes and breathes without waking.
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Urechis unicinctus is a species of marine spoon worm that is widely referred to as the ‘penis fish’.
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