Kissing releases masses of oxytocin, a "love potion" that helps couples bond and feel more attracted to each other.
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Baks the blind boxer has a seeing eye goose named Buttons; a four-year-old goose who leads the pup around everywhere either by hanging onto him with her neck, or by honking to tell him which way to go.
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Meysi is one of the world's smallest dogs, measuring in at just 7cm tall, 12cm long, and weighing a meagre 250 grams (only slightly heavier than a hamster!)
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A group of kittens is called a "kindle".
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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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A puppy is born blind, deaf, and toothless.
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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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