My sim found a stray cat and made friends with it but making it stay has proven difficult...

Interactions would sometimes vanish quickly but they could be reassigned. But once he was finally able to get the cat inside the house, every interaction vanishes in a flash and never get done. He interacted with the cat on his own but that was it. And meanwhile the cat is very distressed because it can't go outside (nor can my sim pick it up), and even putting cat items in the house such as a food bowl and a litter pan don't seem to change its behavior (it peed on the floor and fell asleep in it).

So uh...any advice? I've tried resetting my sims and the cat but nothing happens (I think the sim doesn't reset because he's in the house already and the cat is just named Stray Cat...)

Then why would it work outside? I can't even pick the cat up now to take it outside.

This is the first time I've ever tried to adopt a stray. Usually when interactions vanish like that it's because the thing they were trying to interact with isn't there any more (ie, if I tell two sims to take a plate of something but the first one finishes it, or if they try to interact with a person who's about to leave). But never on something that's stayed in one place and is constantly present.

I only have three mods, one for a yoga mat, one for a radio, and one for a maneki neko (ironically enough).

When the cat was scratching the couch the others got the "guest is behaving inappropriately" moodlet thing so I guess it's considered a guest. I'll try to add it to the family.

Well that was a bust. I'm trying "add to active household" and the cheat window tells me repeatedly that "add" isn't a known command. And writing it all as one word doesn't work either. I've tried it with testingcheatsenabled both on and off. Move object doesn't work either, and none of my sims are selectable despite it saying specifically in the description that you can move sims with it.

I did it in build mode too and it kept saying that the cat couldn't be moved. Neither could either of my sims on the lot, the one who had bonded with the cat or the other one.

"resetsim *" with the asterisk?

Wait, is the command "addtoactivefamily"? I was using "addtoactivehousehold". Well, as well as writing them as individual words since that's how the site here wrote it but it kept saying that "add" wasn't a recognized word.

Huh. I guess I wasn't pushing shift. The cat is in the family now.

But that still doesn't tell me why the interactions were vanishing like that!