Our cat is 18. He is very old, slim and just fragile. We got him to a vet who said he may have cancer, diabetes, etc. but no point in putting him through all the tests, etc. (I agreed). He had some antibiotics for a mouth infection. He looked much better.
He is now going down hill, he used to be obsessed with food and is now barely eating half of a pouch. He is drinking a lot though, but he can't stand on his back legs without them wobbling and falling over. WWYD?