Senior cat losing weight, eating less, diarrhea. What's wrong?

Poor Milo. This frequent diarrhea in a cat his age could be caused by stress, pancreatitis, or hyperthyroidism. Hyperthyroidism can be common in senior cats. He needs to see a vet for this problem, and I recommend getting a geriatric blood panel and urinalysis done. These tests are tailored to senior cats and look for diseases like hyperthyroidism. Once the cause of the diarrhea is found, the vet can discuss treatment options. Please take him into a vet in the next few days. I hope this helps!

In an older cat, my first thought would be dental disease. This would be painful for Krinkle, cause him to eat less, and subsequent weight loss. It could also be that he has diabetes, kidney failure, or hyperthyroidism. Having him seen by a vet this week is a good idea. I hope this helps!

Thanks for using Petco Pet Education Center, formerly Petcoach! Loss of appetite and diarrhea can be observed with many conditions such as gastroenteritis, dietary indiscretion, kidney disease, pancreatitis, among many other possibilities. I recommend that you have Otto evaluated by your veterinarian for further assessment and treatment. They would be able to check for these possibilities and others depending on the findings on exam. Treatment would be based on findings. Good luck and have a good night! Hoping for a speedy recovery!

Kitty should be examined by a vet to determine the cause. He could have hyperthyroidism and your vet can run blood-work to test his thyroid level. Once your vet determines the exact cause, he/she can recommend a treatment. Hope he feels better soon.

If this was caused by a food change I would expect him to be back to normal by now. There may be something else underlying going on here that is the cause of Zebco's diarrhea and weight loss, such as intestinal parasites, pancreatic disease, diabetes, or even thyroid disease. I would recommend taking him to your vet for a through examination and potential tests (bloodwork, fecal exam), to hopefully identify the underlying problem so that he is treated appropriately. In the meantime I would suggest feeding Zebco a bland diet of boiled plain chicken and rice or cottage cheese to help settle his stomach a bit. You can also try adding 1-2 tsp of canned pumpkin (not the pie filling) in his food daily to add fiber and help harden the stools up. Best wishes with Zebco and I hope he feels better soon.

Poor Garfield. At age 17 that is an awful lot going on and I'd be worried there is an underlying issue such as kidney or organ failure, disease, etc. Since he's so old and is having so many symptoms, it's best to bring him to your vet ASAP. They will likely want to run a few tests such as bloodwork or an X-ray to check his organ function, etc. If you can, bringing in urine or stool samples can also help with any testing and help streamline the process. Until you can get the vet, keeping him as comfortable as possible and keeping his eyes and nose clear with a clean washcloth can help. Some cats also do better eating if they can smell the food, so warming up his food or adding some boiled chicken that is smelly may encourage him to eat a little until you can be seen.

These are indeed an unusual set of symptoms, thyroid disease and diabetes would be the first suspects for a cat with increasing appetite and weight loss. A specialist ultrasound scan of the abdomen may be worth while to investigate difficulties with food digestion and absorption or even tumours using up the calories