Squirrels will sometimes adopt orphaned baby squirrels that they’re related to.
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A group of kittens is called a "kindle".
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When cats are happy, they may squeeze their eyes shut.
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Holding hands with someone you love can alleviate physical pain as well as stress and fear.
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Kissing releases masses of oxytocin, a "love potion" that helps couples bond and feel more attracted to each other.
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Some British police cars carry a teddy bear to console children after an accident.
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