Science Matters
11:02 am
Thu September 5, 2013

Who Knew That a Giraffe's Heart Had Such a Big Job?

Credit Wikimedia Commons

What can weigh more than 25 lb, measures about 2 ft, beats at twice the rate and has double the blood pressure of a human heart? Despite a popular myth, it isn't really big, but has a secret revealed by John and Jerry.

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