Cat food for sensitive stomach Bombay cat

A 4-year-old Bombay vomiting after meals in a multi-cat household — that's a really common but genuinely tricky situation, because the mix of foods in the environment makes it harder to isolate what's causing the reaction. Digestive sensitivity in cats is usually food intolerance rather than a true allergy, and limited-ingredient or novel-protein diets tend to work best. To point you in the right direction: is the vomiting happening right after eating or a while later, how long has this been going on, and what is he currently eating — his own food or sometimes sneaking the others' as well?

That quick vomiting — within 10 minutes — often points to either eating too fast or a sensitivity to something in the food, sometimes both together. Chicken is one of the most common intolerances in cats, and the fact that he's also grazing on two different kibbles is making things harder for his gut to settle. Before we can say for certain it's the food, it's worth ruling out speed eating — is he bolting his meals, or does he eat at a fairly normal pace?

Good to know — so speed is a factor but not the whole story. That points more strongly toward a food sensitivity, most likely the chicken. The kibble-stealing is also a real issue; even small amounts of a food he doesn't tolerate can trigger a reaction and reset any elimination process you're trying. Has he ever been on a food that didn't contain chicken or common proteins like beef or tuna — something like duck, venison, or salmon?

In that case I'd move him onto a novel-protein, limited-ingredient wet food and try to get the kibble-stealing under control at the same time — otherwise you won't get a clear picture. My recommendation is Canagan Grain Free Cat Food in the Atlantic Ocean Fish variety. It's a single named protein source, no chicken, no grain, high meat content, and comes in a pâté texture that's easier to digest than chunky formats. It's widely available on Amazon UK. Feed it in a separate room or at staggered times so he can't access the others' food. Give it a solid six weeks — that's how long it takes to see genuine improvement with a dietary change. If he's still vomiting regularly after six weeks on this alone, that's the point to involve your vet to rule out anything structural or a condition like IBD.

Occasional small amounts of the urinary food are unlikely to cause harm to a cat without urinary issues, but it's not ideal as a regular thing — those diets are formulated with specific mineral balances that aren't meant for every cat. More importantly for your situation, it's another source of chicken and additives that will interfere with the elimination process you're trying to run. A covered feeding station or room separation at mealtimes is really the practical solution here — it protects your trial and keeps everyone on the diet that's right for them.