A newborn Chinese water deer is so small, it can (almost) be held in the palm of a hand.
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Sifrhippus was a species of horse about the size of an average duck and roamed North America 56 million years ago.
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There are approximately three chickens for every human on Earth.
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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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