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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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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A newborn Chinese water deer is so small, it can (almost) be held in the palm of a hand.
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Raj from the Big Bang Theory is married to Miss India.
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Dolphins have names for one another.
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