Kissing releases masses of oxytocin, a "love potion" that helps couples bond and feel more attracted to each other.
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Holding hands with someone you love can alleviate physical pain as well as stress and fear.
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Rex the German Shepherd was a rescue dog with a bad temper. He refused to be fed by humans and would attack strangers, but he’s a changed dog after falling in love with Geraldine the goose!
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One litter of kittens can be produced by more than one father.
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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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