Do smaller animals have faster heartbeats?



  1. 0 Votes

    Yes.  Heartrate is inversely porportional to size, and can be estimated using the formula:  Beats per minute= 241/cube root of the weight of the animal in kg. The reason for the rapid heart rate in smaller animals is that the heart in these animals is much smaller and so has a smaller distance to travel with each contraction.  Examples:  a hampster has a heart rate of 500 bpm, a cat 125 bpm, a human 70 bpm, an elephant, 30 bpm.

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