Dog food for fish allergy in a multi-pet home

A fish allergy in a dog who shares a home with cats eating fish-based food — that's a genuinely tricky situation, because the risk isn't just what goes in your dog's bowl. Sensitive stomach issues in dogs usually fall into a few categories: food intolerance, ingredient sensitivity, or a gut that just needs a simpler diet. Identifying which applies is the key to finding the right food. To point you in the right direction, can you tell me what symptoms your dog is showing — loose stools, vomiting, skin reactions, something else — and what foods you've already tried or ruled out?

That tracks — fish oil is one of those ingredients that hides in a lot of recipes, even ones marketed as lamb or chicken, so you have to read the full ingredient list carefully every time. The floor-scavenging is a real complication too; even small amounts of cat food residue can be enough to trigger a reaction in a sensitised dog. Before I suggest anything, a couple of quick questions: is he currently on any food that's keeping him stable, even if it's not ideal? And are the symptoms purely digestive and skin-related, or has anything else come up?

Good — chicken and rice as a reset is exactly the right move, and the fact that he's settled on it tells you chicken is a safe protein for him, which is useful. At 7, a Flat-Coated Retriever also benefits from a food with decent joint support and a moderate fat level, so you don't want to stay on plain home cooking long-term. My recommendation is Canagan Free-Run Turkey for Dogs. It's a single-source protein food with no fish, no fish oil, and no hidden fish derivatives — turkey is the only animal protein in it. The ingredient list is short and transparent, which matters a lot when you're managing a confirmed allergy. It's grain-free, high-meat, and includes sweet potato for digestible carbohydrate. Critically for your situation, it has glucosamine and chondroitin from natural sources, which is worth having in a seven-year-old larger breed. One thing to manage at home: feed the cats in a separate room and wipe down the floor after their meals before your dog has access. No food can protect him from repeatedly ingesting the allergen, so containment on the cat side is just as important as what's in his bowl.

Turkey is one of the lower-risk proteins for dogs — it's far less commonly implicated in food allergies than beef, dairy, wheat, or fish. Because your dog hasn't been exposed to it before (based on what you've described), there's no existing sensitisation to it, which makes it a good novel protein choice for him. That said, any transition should be gradual — mix it in with his current chicken and rice over about 10 days, increasing the proportion slowly. If you see any return of symptoms in the first few weeks, that's useful diagnostic information, but in most cases dogs with fish allergies do very well on turkey-based foods. The key is making sure the rest of the recipe is clean, which is why Canagan works here — there's nothing tucked away in the formula that could catch you out.

It's easy to overlook because it feels minor, but with a confirmed allergy it really does add up over time. Feed the cats somewhere he can't follow, give the floor a quick wipe after each cat meal, and you'll remove a big chunk of the ongoing exposure. Pair that with the Canagan Turkey and a slow transition, and you should see a real improvement in both the skin and the digestion within four to six weeks. Good luck with him.