I’ve read that animals react faster relative to their metabolism. Smaller animals with faster metabolisms usually have much faster natural movements. Mammals as well. See squirrels.
Edit: Here is the article. What I wrote is probably wrong above.
[here](https://www.extremetech.com/extreme/166694-small-animals-see-the-world-in-slow-motion-or-why-your-puppy-is-so-hyperactive#:~:text=New%20research%20indicates%20that%20smaller,be%20moving%20in%20slow%20motion.)
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