Reposting a question I saw on reddit like a decade ago. My favorite answer I read was, “I’d take my 100 dogs home and live like a king.”
Personally, I have two cats, Sansa and Shere Khan. For both, I could significantly narrow down the options by seeing which cats meowed at me the most. (I swear I didn’t teach them to yell, but here we are.) For both, I could bring in a dog to discern which cats weren’t scared of dogs. For Sansa, I could wait until dinnertime and put down some wet food, then see who hems and haws about eating it despite having screamed for it. That might not be enough to get it down to just one each, but oh well. I could use 5 or 10 more cats.
I’d try and use the bathroom. I’d assume that the two cats that follow me in are mine. If it turns out that all cats will just follow strangers into the bathroom, then one cat is immediately going to jump in the bathtub and start messing with the curtain. Another cat is going to try and dive head first into the toilet. Those will be mine.