The Savannah is the largest domestic cat breed. It resembles a small leopard and behaves like a dog. They can grow up to 40 lbs, have an eight foot vertical jump, and can be trained to walk on a leash and play fetch.
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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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The most expensive cow in the world was sold in 2009 for $1.2 million.
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Cows can sleep standing up, but they can only dream lying down.
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A zoo in China gave a gay penguin couple the opportunity to raise a chick.
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Female kangaroos have three vaginas.
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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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