When dragonflies mate, their tails form a love heart.
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There's a young hippo and a 130+ year old tortoise in a Kenyan wildlife preserve who are best friends and they even sleep and play together.
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A newborn Chinese water deer is so small, it can (almost) be held in the palm of a hand.
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It has been calculated that a single breath from a mature blue whale can inflate up to 2,000 balloons.
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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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