Kissing releases masses of oxytocin, a "love potion" that helps couples bond and feel more attracted to each other.
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Sandy, an African Penguin, has been in 'love' with her keeper at the Nuremburg zoo since 1996.
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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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A new born kangaroo is small enough to fit in a spoon!
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Dolphins have names for one another.
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A group of kittens is called a "kindle".
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Raj from the Big Bang Theory is married to Miss India.
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Ten seconds of hugging a day increases levels of oxytocin, which can reduce blood pressure, thus cutting the risk of heart disease.
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