Kissing releases masses of oxytocin, a "love potion" that helps couples bond and feel more attracted to each other.
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In 2011, archaeologists discovered the skeletal remains of a Roman couple who have been holding hands for 1,500 years.
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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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A group of kittens is called a "kindle".
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Squirrels will sometimes adopt orphaned baby squirrels that they’re related to.
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Sergeant Stubby was the only war dog to be promoted to sergeant through combat in WWI. He saved his regiment from surprise mustard gas attacks, found and comforted the wounded, and even once caught a German spy by the seat of his pants, holding him there until American Soldiers found him.
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