Pet icon gone black and other issues

I started having issues in my save when I accidentally had 18 sims and 6 pets in a household due to a wedding. I have a mod to allow for larger households but usually have it set at 23 sims and 8 pets. After I moved out several of the sims, none of the adults in the household would let me click on their icon but everyone else from YA downwards was fine. No amount of taking the adults out of the household or restarting the game fixed this. So I gathered everyone up and shifted them to a new save. I split the household up, with the two sims who were the next heirs plus one puppy in the new household and everyone in another. But now the puppy’s icon is black and I don’t know how to fix it. And I actually was supposed to have two puppies but one of them didn’t save with the rest of the household, so I’m assuming she was too glitched to save.

How do I fix my puppy though?