Ten seconds of hugging a day increases levels of oxytocin, which can reduce blood pressure, thus cutting the risk of heart disease.
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Dolphins have names for one another.
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A group of kittens is called a "kindle".
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Sea otters hold hands while sleeping so they don’t drift away from each other.
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One litter of kittens can be produced by more than one father.
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Sandy, an African Penguin, has been in 'love' with her keeper at the Nuremburg zoo since 1996.
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