Thanks for the additional information.
I am sorry to hear that Skootz (sorry that I typed smooth as that is what it said up above as his name) is having diarrhea even with the food changes. Diarrhea can be caused by many different disorders therefore giving you an exact diagnosis is going to be difficult without an exam, but I can tell you some of the more common disorders that we need to consider:
- Intestinal parasites such as roundworms, hookworms, or even Giardia
- Inflammatory bowel disease
or an overactive thyroid gland
or liver disease
- Unfortunately cancer of the intestines such as lymphoma always needs to be consider though I hate to mention this
- Chronic pancreatitis
At this time, you could consider trying another different diet to see if this would help first, but my best recommendation would be to take Skootz to your vet to have an exam and possibly a blood test performed to make sure that the diarrhea is not due to something more serious.
If you wanted to try a different food I would start him on a sensitive stomach diet. If he will only eat canned food I would consider using a brand such as Purina ONE, Pro Plan or even IAMS and use their sensitive stomach formula. This is usually much easier to digest and will help reduce diarrhea.
Other suggestions would be to add some canned pumpkin to his food at 1/2 of a teaspoon every day. This will add fiber which can help bulk up the stools.
The last suggestion if you did not want to take him to a vet a t this point would be to purchase a probiotic called Fortiflora that can added to the food or feed as a treat. This has healthy bacteria that will help cats with diarrhea. Here is a link to where you can purchase this:
If these suggestions are not helping then I would definitely take him to a vet for more help.
Hope this helps to answer your question - if not or if you have any more questions please feel free to reply by clicking on the "reply to" button. Thank you in advance!