What does a food allergy look like on my dog?

You might first notice your dog scratching more than usual—chewing at their paws until the fur looks thin, or rubbing their face against the couch nonstop. These aren’t just “normal” dog habits; they’re often early signs that something in their food is triggering a reaction. Some pups develop red, inflamed skin patches, especially around the ears or belly, that can feel warm to the touch.

Digestive issues are another common clue. Your dog might have loose stools that smell stronger than usual, or they could vomit shortly after eating their regular kibble. Some even refuse food altogether, a clear sign they’re feeling uncomfortable. Keep an eye on how often they drink water too—upset tummies can lead to dehydration fast.

It’s important to act quickly, not just for your dog’s comfort but also to stay compliant with local pet welfare laws. Many areas require owners to address ongoing health issues promptly, and ignoring allergies could lead to more serious conditions like skin infections that need vet care. Never switch your dog’s food without checking with a professional first—sudden changes can make symptoms worse.

When you visit the vet, they’ll likely recommend an elimination diet to pinpoint the allergen. This means feeding your dog a simple diet of ingredients they’ve never had before, like duck and sweet potato, and slowly reintroducing old foods to see what causes a flare-up. Be patient—this process can take several weeks, but it’s the most reliable way to find the problem.

Remember, food allergies aren’t the same as food intolerances. Intolerances usually cause only digestive issues, while allergies trigger an immune response that affects the skin too. Don’t self-diagnose with over-the-counter treatments; these can mask symptoms and delay proper care. Your vet is the best resource to keep your dog healthy and happy.

By staying alert to the signs and working closely with your vet, you can help your dog feel like themselves again. Once you know the allergen, you can pick foods that keep them symptom-free, making mealtime a stress-free experience for both of you. A little attention to their health now will save you from bigger headaches down the line, and keep your furry friend by your side for years to come.