I have a 14 year old male cat that is urinating alot. I go through about 40lbs of clumping cat litter for 3 cats a week. He has lost of weight. When I pick him up i can feel his spine, his bones. He drinks constantly and he does use the litter box most of the time. Sometimes he will pee right outside the litter box which is in the garage. Does anyone think he has kidney failure or maybe diabetes. Going to the vet is expensive especially for a 14 year old cat - which I think is the average life span for a cat. This cat is fixed.