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Speaking of cats and earthquakes, I just watched:

https://www.youtube.com/watch?v=VJ-p9qOhBv4

...again. This is a Cat Cafe in Japan, and you can clearly see the cats get alerted to something ~10 seconds before the shaking starts. Do we have an idea of what they are reacting to?

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Huh. You do hear about animals reacting before earthquakes. My cat did alert before the quake, but didn't really scoot, until the shaking started.

He was sitting on my lap, at the time. I'm glad he didn't extend his claws.

I suspect some kind of subsonics that come before the shaking really gets going. It can take a bit of time to get a rhythm going, so the earthquake may actually be under way for a bit, before we really feel it.

They are feeling the p-wave, which arrives just before the s-wave that you feel as shaking: https://www.smithsonianmag.com/smithsonian-institution/ask-s...

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