Urechis unicinctus is a species of marine spoon worm that is widely referred to as the ‘penis fish’.
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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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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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Lurch, a Watusi bull, had the largest horns in the world.
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