Kleiber's law, named after Max Kleiber 's biological work in the early 1930s, is the observation that, for the vast majority of animals, an animal's metabolic rate scales to the 3/4 power of the animal's mass. Thus a cat, having a mass 100 times that of a mouse, will have a metabolism roughly 31 times greater than that of a mouse.
Kleiber's law, as many other biological allometric laws, appears to be a consequence of the physics and geometry of animal circulatory systems.
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