Thanks so much for the advice. I sent my brother the thread and told him to check it daily. I have not had time to come on and see the thread until now. I have not heard from him to see if he rehomed Katrina or not, but I will update once I find out. Katrina is spayed, he cleans out the litter box daily, and the vet has been asked about it. The vet really didn't give my brother much advice except that she's healthy and that it hasn't got anything to do with her health. As for the other questions, I don't know. I'm hoping that he read your replies and figured something out.