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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Sharks have been on the planet longer than trees.
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A hippo sleeping underwater automatically rises to the surface every ~4 minutes and breathes without waking.
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The world’s largest frog, the Goliath frog, can grow over 13 inches in length and can jump up to 10 feet in a single bound.
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