Holding hands with someone you love can alleviate physical pain as well as stress and fear.
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A zoo in China gave a gay penguin couple the opportunity to raise a chick.
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When cats are happy, they may squeeze their eyes shut.
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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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Cuddling (or other ‘love’ acts) helps to heal physical wounds faster due to the release of Oxytocin which is proven to reduce swelling.
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