There's a competition in Sweden called Kaninhoppning, or rabbit show jumping.
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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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Cows can sleep standing up, but they can only dream lying down.
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Blue whale arteries are large enough for humans to swim through and their hearts are the size of cars.
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Dire wolves actually existed, living up to 10,000 years ago before going extinct.
10
There’s a bonobo named Kanzi who has learned to build a campfire and cook his own food.
8