Urechis unicinctus is a species of marine spoon worm that is widely referred to as the ‘penis fish’.
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Sharks, like other fish, have their reproductive organs in their chests.
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The cat brain weighs about 30g.
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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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It has been calculated that a single breath from a mature blue whale can inflate up to 2,000 balloons.
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Tigers can see 6 times better at night than humans.
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