Our cat smokey is 17.5 and he lost the ability to walk 2 weeks ago. Took him to the vet and they said it was hard to tell what could be the issue. Vet treated his very infected paw too. Smokey was feeling OK to eat etc. But now his legs are moving less and hi cannot pee unless we help him. No stool either. What could be going on...any help would be appreciated. I'm so worried