About a year ago (before the move), our older kitty, Little Kitty started throwing up occasionally and having diarrhea.
We took her to the vet.
The vet recommended prescription high fiber food. She refused to eat it (and so did all our other kitties). We gave up. I looked online and found that fancy feast had suddenly started to make many kitties sick, so we stopped giving fancy feast. We bought high quality one dollar per can catfood. We switched back to the Purina One sensitive systems catfood we’d kept primarily because it was the only thing that didn’t make our late Big Kitty throw up.
We moved. Little Kitty started throwing up more and having constant super stinky diarrhea.
We took her to another vet. The vet diagnosed irritable bowel syndrome.
Step 1: Try single protein catfood for a week or two. We went through a number of these. They did not help. Mackerel seemed to do better (not perfect), but it was only available at the whole foods several towns away and you’re not supposed to feed cats exclusively on fish. We also tried human grade food available at the grocery (chicken, beef), but that didn’t help. In fact, poultry seemed to bring out the worst symptoms.
Step 2: Try exotic single protein catfood with different carbs (like peas!). We tried venison. No luck. We tried Quail. No luck. I think we tried some other birds. We tried really hard to find a pet shop willing to source rabbit (or kangaroo) in a smaller size than a flat, but although they could order rabbit they kept not ordering it (possibly because rabbits are pets and not catfood, but they didn’t want to you know, flat out refuse. Or possibly incompetence.)
Nice kitty started losing weight. We took her back to the vet.
Step 3: Hydrolyzed prescription hard catfood. For this they do something to chicken that is like what they do to cow milk in baby formula. After a couple weeks it seemed to help. She’s still not perfect, but she throws up less, her poo is more solid (though disturbingly singl-colored). She’s still skinny, but not frighteningly so.
That, however, is not the end of this story. More next Monday ($ is involved…)