A newborn Chinese water deer is so small, it can (almost) be held in the palm of a hand.
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The Lion's Mane Jellyfish is the largest jellyfish in the world. They have been swimming in arctic waters since before the dinosaurs (over 650 million years ago).
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There was a bear called Wojtek who was adopted by Polish soldiers during WW2. It carried ammunition, wrestled with soldiers, and drank beer.
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A 42-foot sperm whale has about 7 tons of oil in it.
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Rattlesnake mating sessions have been known to last more than 22 hours.
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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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