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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The elephant brain weighs about 6,000g.
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Cows can sleep standing up, but they can only dream lying down.
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Gorillas can catch human colds and other illnesses.
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