Animal Heart Rate & Size: What's the Connection?

Yes. In general, smaller animals have faster heart rates than larger animals. Here are the heart rates of different organisms with varying body sizes :

1. A hummingbird's heart can beat up to 1,260 times per minute.
2. A small dog's heart rate is usually between 70 and 120 beats per minute.
3. An adult human's heart rate is typically between 60 and 100 beats per minute.
4. A horse's heart rate can be as low as 28 beats per minute.
5. An elephant's heart rate can be as low as 25 beats per minute.