There's a competition in Sweden called Kaninhoppning, or rabbit show jumping.
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George was the world's largest dog who weighed 233 pounds, stood at 43 inches tall from paw to shoulder, and ate 180 pounds of food a month.
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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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Dolphins sometimes have fun by blowing bubbles and creating rings of air underwater, which they then swim through.
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Sharks have been on the planet longer than trees.
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Crows living in some urban areas drop nuts into traffic to let the passing cars crush them, then they wait for the red lights to stop the traffic so they can grab and eat it.
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