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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There was a cable network called The Puppy Channel that, for 3 years, broadcast only broadcast footage of puppies playing.
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A puppy is born blind, deaf, and toothless.
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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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In 2011, archaeologists discovered the skeletal remains of a Roman couple who have been holding hands for 1,500 years.
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