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How Many Heartbeats Does Each Species Get in a Lifetime?

Illustration for article titled How Many Heartbeats Does Each Species Get in a Lifetime?

Have you ever wondered how many heartbeats an average person has in their lifetime? What about for cats or dogs or other animals? Turns out because of metabolic rates and size of different species, each animal gets around a billion beats.

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Around being the operative word, of course. Humans and chickens are outliers in that we get 2.21 billion and chicken gets 2.17 billiion beats (I wonder how many actually see that much). But a lot of other animals teeter the 1 billion line: horses, pigs, rabbits, elephants, cats, whales, etc. Animals big or small, fat or strong, fast or slow—it seems like there is a magic number for us all. Other than small dogs. They got the short end of the stick.

Illustration for article titled How Many Heartbeats Does Each Species Get in a Lifetime?
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[Kottke, Image via Djordje Radivojevic/Shutterstock]

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DISCUSSION

robbiewashere
robbiewashere

I've got to think they've got the dog numbers wrong:

1. Dogs are generally shorter-lived the _larger_ the breed is. I think they reversed the numbers.

2. 2000, 5000,and 8000 grams are all fairly small dogs (4.4, 11 and 17.6 pounds).

That's not the only thing, though:

A 90kg person is pretty big, that's nearly 200lbs. So is a 1200kg horse — a Clydesdale tops out around 1000kg.

Where did these guys get their numbers?