Kissing releases masses of oxytocin, a "love potion" that helps couples bond and feel more attracted to each other.
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Squirrels will sometimes adopt orphaned baby squirrels that they’re related to.
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When dragonflies mate, their tails form a love heart.
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A group of pugs is called a grumble.
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A couple had their wedding rings engraved with a waveform of their own voices saying "I do."
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