The giraffe has an extremely high blood pressure
The giraffe has an extremely high blood pressure (280/180 mm Hg) which is twice that found in humans. Additionally, the heart beats up to 170 times per minute double that of humans. It was previously thought that a giraffe had a really big heart, but recent research has revealed that there isn’t room in the body cavity for this. Instead, the giraffe has a relatively small heart and its power comes from a very strong beat as a result of the incredibly thick walls of the left ventricle.
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