Animals: Causal relationship between living organism heart rate and longevity
There are various creatures in animals, from large to small. Did you know that smaller animals have higher heart rates and larger animals have lower heart rates? Animals, including humans, are said to have a limited heart rate. And there is a difference in the way time flows depending on whether it is small or large. With some exceptions, most organisms are said to reach their end of life when the heart rings 1.5 billion times.