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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There's a rare breed of pig that looks like a sheep.
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Sharks have been on the planet longer than trees.
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Dire wolves actually existed, living up to 10,000 years ago before going extinct.
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A group of kittens is called a "kindle".
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