A new born kangaroo is small enough to fit in a spoon!
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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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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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When cats are happy, they may squeeze their eyes shut.
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One litter of kittens can be produced by more than one father.
57
A newborn Chinese water deer is so small, it can (almost) be held in the palm of a hand.
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