A little 3rd Edition teasing today.

It was noted in 3e that a cat was CR 1/4 while a human commoner was somewhere around CR 1/3. Which meant, all things being equal, a house cat had a better than average chance of  kicking the crap out of a grown human being. Okay, the game only referred to “cats”, which meant it could just as easily refer to feral cats living in the mean alleys of Waterdeep and not necessarily the contemporary domesticated and pampered Mr. Whiskers. Even then, the average medieval tabby kept as a pet was likely a skilled mouser and trained killing machine.

This is often taken one step farther by suggesting that a wizard is threatened by a house cat. I’m not sure if any wizard in any game has every been killed by a cat, but it sure gets thrown around a lot, typically while also complaining about games with low starting hitpoints.