this post was submitted on 13 Jul 2025
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Not necessarily, many small animals have an utterly insane metabolism making them eat their entire body mass in a couple of days. For example, hummingbirds eat the human equivalent of 150,000 calories per day.
Larger animals typically cannot afford to spend so much energy - there is just no large food source that has sufficient calory density.
Good point! I'd love to see a by-genus breakdown of average metabolic rate vs body mass.