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Why Giraffes Don't Faint When They Bend Down To Drink

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giraffe · giraffe facts · how giraffes drink · giraffe blood pressure · giraffe heart · animal biology

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When a giraffe drinks, its head drops from about two metres above its heart to below it. Here's how a thick-walled heart, valves in the neck veins and super-tight leg skin keep it from fainting or swelling up. Three cut-aways, one very tall animal.

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