The reindeer is the only mammal that can see UV light.
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Cows can sleep standing up, but they can only dream lying down.
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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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A group of pugs is called a grumble.
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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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