A newborn Chinese water deer is so small, it can (almost) be held in the palm of a hand.
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One litter of kittens can be produced by more than one father.
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Dolphins have names for one another.
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When a male gentoo penguin "falls in love" with a female penguin, he searches the entire beach to find the perfect pebble to present to her.
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Squirrels will sometimes adopt orphaned baby squirrels that they’re related to.
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Holding hands with someone you love can alleviate physical pain as well as stress and fear.
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