The difference between antlers and horns is that antlers are shed each year and are made of bone while horns are kept for life and are made of living tissue and bone with a sheath that is very similar to human finger nails.
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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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Dolphins can rapidly heal from extreme injuries, such as shark bites, and regenerate their original body shape.
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Sloths take two weeks to digest their food.
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The Lion's Mane Jellyfish is the largest jellyfish in the world. They have been swimming in arctic waters since before the dinosaurs (over 650 million years ago).
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Nervous dogs wag their tails to the left, and happy dogs to the right (from the dog’s point of view) – and fellow canines pick up on this lop-sided tail language.
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