A newborn Chinese water deer is so small, it can (almost) be held in the palm of a hand.
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Sandy, an African Penguin, has been in 'love' with her keeper at the Nuremburg zoo since 1996.
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A zoo in China gave a gay penguin couple the opportunity to raise a chick.
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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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One litter of kittens can be produced by more than one father.
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