What to Feed a Dog with Diabetes
Diabetes in dogs is managed by a vet, and the specific diet, timing and any insulin your dog needs has to be worked out with them rather than pieced together from a shop's product range. What we can say honestly is what generally matters for a diabetic dog's diet — consistency, fibre and steady weight — and where our own range fits alongside that.
Alongside your vet’s advice, owners often look at bowls that slow fast eaters down and lick mats for frozen treats.
Why consistency matters more than any single ingredient
A diabetic dog's insulin dose, where one is used, is worked out around a fairly consistent diet, so sudden changes in food type, treat amount or feeding times can throw that balance off even if the new food is perfectly good in itself.
This is why vets generally ask owners to stick closely to whatever feeding routine has been agreed, and to check before changing food, brand or feeding times rather than adjusting things off your own judgement.
Treats and table scraps are often the first thing to tighten up once a dog is diagnosed, simply because they're the least controlled part of a normal feeding routine and the easiest place for an inconsistency to creep in without anyone noticing.
What's generally true about diet and diabetes
Diets with a steady release of energy, often higher in fibre and moderate in fat, are commonly discussed for diabetic dogs because they can help avoid sharp swings after a meal. Keeping a dog at a healthy weight is just as important as the specific food, since excess weight makes diabetes harder to manage.
None of this replaces an actual plan from your vet, who may recommend a specific therapeutic diet that isn't something a general pet shop carries, and that's worth knowing upfront rather than discovering after buying the wrong thing.
Water intake is also worth keeping an eye on, since a noticeable increase in thirst is one of the signs vets ask owners to watch for alongside diet and weight.
Where a general food range like ours fits in
We carry general foods with lower fat and higher fibre that some owners use alongside their vet's guidance for a diabetic dog once a plan is in place, but a prescription veterinary diet is only available through a vet directly, so that's a separate conversation to have with them rather than something to look for on a general shop's shelf.
If your vet has recommended a specific type of diet rather than a named prescription product, it's worth checking a food's actual fat and fibre content on the label against what they've suggested, rather than assuming any one bag labelled ‘light’ or ‘sensitive’ is automatically right.
Questions worth taking straight to your vet
How much to feed, when to feed relative to any medication, and whether treats fit into the plan at all are all questions your vet is best placed to answer for your individual dog, since diabetes management varies a lot from one dog to the next.
Bringing a food label with you to a check-up, rather than describing it from memory, makes it easier for your vet to say clearly whether it fits the fat and fibre range they'd recommend for your dog specifically.
Foods formulated for this
Everything below is in stock with us, priced with delivery worked out, and packed and posted by hand in the UK.

Hilife Feed Me with Turkey Chicken
A semi-moist complete food for adult dogs, softer than kibble and shelf-stable
From£7.45

HiLife Feed Me with Beef
A semi-moist complete dog food with wheat, meat meals and a little beef
From£7.45

Harringtons Just 6 Dry Dog Food Lamb
Grain-free lamb dry dog food in 2KG and 12KG sizes, with size-specific formulas
From£13.99

James Wellbeloved Adult Breed Dry Dog Food Turkey Rice
A hypoallergenic dry food for adult dogs, in small and large breed versions, built around single-source turkey protein
From£45.75

James Wellbeloved Grain Free Adult Dry Dog Food Fish Veg
Grain-free fish kibble for adult dogs, with glucosamine and chondroitin included
From£12.75

James Wellbeloved Adult Dry Dog Food Turkey Rice
A hypoallergenic dry food for adult dogs, built around a single source of turkey protein
From£41.45

Burgess Sensitive Adult Dog Turkey
Complete turkey and rice dry food for adult dogs in a 12.5KG bag
£48.89

James Wellbeloved Senior Breed Dry Dog Food Turkey Rice
Turkey and rice kibble for senior small-breed dogs, sized for smaller mouths
From£11.69

Harringtons Lamb & Rice
A 15kg complete dry dog food with lamb and freshly prepared chicken, for dogs from 8 weeks
£45.99

Harringtons Adult Dog Turkey
A complete dry dog food with turkey and freshly prepared chicken, for dogs from 8 weeks
From£13.09

Burns Adult/Senior Dog Original Lamb and Brown Rice
Single-source lamb and brown rice, formulated for adult and senior dogs with sensitivities
£35.99

Burns Adult/Senior Dog Hypoallergenic Mixer
Hypoallergenic dry mixer for combining with wet food or a home-cooked diet - not a complete food
£13.49
Common questions
- Can I manage my dog's diabetes with diet alone?
- That's a decision for your vet based on your dog's specific case; some dogs are managed with diet and monitoring alone while others need insulin as well. It isn't something to decide without veterinary involvement, given how serious untreated diabetes can become.
- Should I feed my diabetic dog at the same time every day?
- Consistent feeding times are generally recommended for diabetic dogs, particularly if insulin is involved, since meals and medication usually need to be timed together. Your vet will set out the exact routine that suits your dog.
- Are grain-free foods better for diabetic dogs?
- Grain-free isn't the deciding factor for diabetes management; fibre content, fat level and overall calorie consistency matter far more than whether a food contains grain. Don't assume a grain-free label makes a food suitable on its own.
- Can treats affect a diabetic dog's blood sugar?
- Yes, treats count towards a dog's overall diet and can affect blood sugar just as much as a meal, so it's worth asking your vet what treats, if any, are appropriate rather than treating them as a separate category.
Related
Sources
Written against guidance published by UK veterinary and welfare organisations. Always confirm specifics with your own vet.
Written by Matt Garnett, who runs Giddy Pets and is a lifelong pet owner — not a vet. This is general information, not veterinary advice, and it cannot replace an examination by the vet who knows your animal. How we write these guides.