So it just suddenly started happening, at complete random my dog will get reset to death and stuck at the front door, can't do anything, just keeps resetting back to the front door of my lot. I fixed it with a full town reset but it came back again a few minutes after and constantly doing full town resets gets a bit long.
Now my mod folder is a mess and I absolutely won't care if stuff got corrupted/I gotta start over or anything I just want to be able to understand what's happening. Looking over the error log I can tell my dog is trying to wake up a fairy sleeping in a fairy house, but the action doesn't even appear before she gets reset. She will fully disappear and pop back up, and if I'm focusing her the game will force me to focus on one of my cats before she appears back in.
For some reason my log really doesn't want to upload so I had to put it on pastebin

I think that's a known issue with the fairy house and pets, because the interaction doesn't really exist- or rather, the pet interaction only accounts for sleeping sims who are in beds and not the existence of an object sims can disappear into to sleep. Something like that.

Last saw it pop up here, a potential workaround is noted there in the last comment.

Ah! I see Thank you very much for the insight, I'll move the fairy house somewhere the dog can't go, tyvm!!!