Chevy, the lab X we rescued 6+ years ago, has started urinating in the house. She has never done this before. I let her out and she will pee about 2 large lakes and then go to the water dish and drink about half a gallon. She is kept in my room at night and has managed to soak the carpet twice. She is not signaling to go out like she used to do. Just last night she created the pacific ocean in my parent's room, I mean it was the biggest puddle I have ever seen. Could it be kidney problems or cushings? . I will be taking her to the vet as soon as I get paid on Friday. She is no longer taking the steroids for her skin problem, the vet weaned her off them slowly. She also has severe arthritis,the skin problem, and is just generally slowing down. She is about 11 or 12. Also, if it can't be fixed, what are the best doggy diapers to get?