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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Sharks have been on the planet longer than trees.
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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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In 2011, a male tiger in India adopted a litter of orphaned cubs, taking on the role of ‘mother’. Wildlife officials say such behavior had never been observed before.
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