Blue whale arteries are large enough for humans to swim through and their hearts are the size of cars.
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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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Dolphins sometimes have fun by blowing bubbles and creating rings of air underwater, which they then swim through.
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A dork is a whale's penis.
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Nervous dogs wag their tails to the left, and happy dogs to the right (from the dog’s point of view) – and fellow canines pick up on this lop-sided tail language.
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There's a competition in Sweden called Kaninhoppning, or rabbit show jumping.
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