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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Some lizards, in which the tail is a major storage organ for accumulating reserves, will return to a dropped tail after the threat has passed, and will eat it to recover part of the sacrificed supplies.
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The male seahorse carries babies and 'gives birth' to them instead of the female.
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Dolphins sometimes have fun by blowing bubbles and creating rings of air underwater, which they then swim through.
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Vanilla flavoring is sometimes made with an ingredient from beaver pee.
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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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