My 15-yr. old cat has had diarrhea for 3 mos. constantly. The vet says he does not have an infection, and he has tested his liver and kidney function, all tests came out good (incl. thyroid). My vet says he's having trouble digesting his food because of his age and I should put him on a low fat food. I tried but he won't touch Science Diet. I don't know what else to do. Do you have any suggestions?
You may want to consider an intestinal biopsy. This may help with a diagnosis and proper treatment. vetcare