My cat, Little Gray & White, he's the one who had the really bad tumor on his leg a few years back, has overall been doing very well for years now even with diabetes. A couple of nights ago, he was blah. Then again the next day. Seemed to be something wrong with his mouth.
It's his kidneys. His numbers are way off, very bad, worse than Mitten's. There's a sore in his mouth but it's due to his kidneys. He ate a little baby food last night, none today. He's getting sub-q fluids twice a day and the vet said it may take awhile for him to get better but that it doesn't look good. No more insulin, his blood sugar was low.