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With a tall giraffe need large hearts to pump blood to the brain, rotate. A giraffe can pump the blood to the brain is more than three times to access the human brain that is to rise to about 8 feet, a water pump that pumps up to a tall building. At the heart of a giraffe is about 10 kg heavy, circulatory system, it is a special "Rete mirabile" called to help prevent potential hazards from the blood to feed the brain too much time down a giraffe drinking water. This special system of circulation valve closed open-water sphere.
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