Dog food allergies: Patterdale on a budget

True food allergies in dogs are actually less common than food intolerances, but rescue dogs can arrive with a history of exposure to lots of different proteins, which makes unpicking the triggers trickier. The gold-standard approach is an elimination diet — ideally using a novel protein or hydrolysed protein food your dog has never encountered before. To point you toward the right option, it would help to know: what breed and age is your dog, what symptoms are you seeing, and have you already tried an elimination diet or had a vet weigh in?

That combination — itchy paws, belly redness, and chronic loose stools — is a classic picture of food intolerance rather than a true allergy, which is actually useful because it often responds well to a clean elimination diet. The tricky part with a rescue is you genuinely don't know what proteins she's already been exposed to, so the safest bet is a hydrolysed protein food rather than just a novel protein one. Hydrolysed proteins are broken into fragments too small for the immune system to react to, so they sidestep the whole 'has she had this before?' problem. Before I suggest something specific — is she currently on a dry kibble, wet food, or a mix? And roughly what size bag or monthly spend are you working with?

Good news — at 6kg, a Patterdale doesn't eat much, so your budget stretches reasonably well. My recommendation is Harringtons Hypoallergenic Adult Dry Dog Food in the Turkey & Potato variant. It's a single-protein, grain-free recipe with no common allergens like beef, chicken, wheat, or dairy. Turkey is a protein that most rescues haven't had in large quantities, and potato is a clean carbohydrate source that's easy on sensitive guts. A 10kg bag typically comes in around £30–32 on Amazon UK and would last a 6kg dog well over a month at the recommended feeding amount. It's not a hydrolysed food, but for a budget-conscious elimination trial with a novel protein, it's one of the most reliable affordable options available. Stick to it exclusively for eight to twelve weeks — no treats, no table scraps, nothing else — and you'll get a clean result. If symptoms clear up and then return when you reintroduce something else, you've found your trigger.

Great question, and this is where most elimination trials fall apart. During the trial, use her kibble as the treat — just portion a small amount out of her daily allowance and use it as rewards during training sessions. Patterdales are food-motivated and she won't mind if the treat looks boring, as long as you deliver it with enthusiasm. If you absolutely need a separate treat, use plain boiled turkey pieces and nothing else — it keeps the protein source consistent with her food. Avoid dental chews, flavoured supplements, or anything with an ingredients list during this period.

That's the right call. Give it the full eight weeks before drawing conclusions — skin symptoms in particular can take longer to resolve than gut symptoms, so don't be discouraged if the stools improve before the itching does. Keep a simple weekly log of her symptoms so you can see the trend clearly. If there's no improvement at all after eight weeks on a clean diet, it's worth going back to the vet to rule out environmental allergies or mange, which can look almost identical. Good luck with her — rescues with sensitive stomachs are absolutely worth the extra effort.