What to feed a dog with colitis
A dog with colitis — inflammation of the colon, which usually shows up as urgent, mucus-covered or bloody diarrhoea — is generally managed with an easily digestible diet, often lower in fat and built around a limited number of ingredients, alongside whatever treatment your vet has prescribed. What specifically suits your dog depends on the cause, so this is a conversation to have with your vet rather than a diet to choose alone.
Why diet matters for colitis
The colon's job is to absorb water and process the last stage of digestion, so when it's inflamed, food that's harder to break down or high in fat can make symptoms worse, while a bland, easily digested diet gives the gut less to struggle with while it settles. This is why vets commonly recommend a short-term bland diet during a flare-up, alongside any medication needed.
Long-term, some dogs with recurring colitis do well on a diet with a novel or limited protein source, extra soluble fibre, or a lower fat content, but which of these actually helps varies between dogs and depends on what's driving the colitis in the first place — diet intolerance, stress, parasites and infection can all cause a similar picture.
What to look for on a food label
A limited-ingredient recipe with a single named protein source and minimal additional fillers is often easier to manage and monitor than a food with a long ingredient list, since it's simpler to spot if a particular protein doesn't agree with your dog. Moderate to lower fat content is also commonly recommended, since fat is harder to digest and can aggravate an inflamed colon.
Added soluble fibre — often listed as beet pulp, psyllium or similar — can help firm up stool and support colon health in some dogs, though the right level varies by individual dog and is something your vet can advise on for your dog specifically.
Introducing any new food gradually
Whatever food is chosen, introduce it slowly over a week or more, mixing increasing amounts in with the current diet, since a sudden switch is itself a common trigger for digestive upset — which is the last thing a dog with colitis needs while their gut is already inflamed.
Keep treats and scraps to an absolute minimum during this period. Even a treat that's normally fine for your dog can undo the benefit of a carefully chosen diet if it's rich, fatty, or simply an addition their gut isn't currently used to.
When to involve your vet
Colitis needs a vet's involvement to identify the cause and rule out things like parasites, infection or a more serious underlying condition — diet changes alone don't address every cause, and a dog with ongoing or recurring symptoms needs a proper diagnosis rather than a series of food swaps at home.
Contact your vet promptly if your dog has blood in their stool, seems lethargic, is losing weight, or the diarrhoea doesn't settle within a day or two, and always follow their specific dietary advice over anything general read online, since it will be tailored to what's actually driving your dog's colitis.
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
- What foods should I avoid if my dog has colitis?
- Rich, fatty foods, sudden new ingredients, and table scraps are generally best avoided, since they're harder for an inflamed colon to process and can trigger a flare-up. Your vet can advise on anything specific to avoid based on what's causing your dog's colitis.
- Is chicken and rice good for a dog with colitis?
- A plain, bland diet like boiled chicken and rice is a commonly used short-term option during a flare-up because it's easy to digest, but it isn't nutritionally complete long-term and should only be used the way your vet advises, then transitioned to an appropriate complete diet.
- How long does colitis last in dogs?
- This varies hugely depending on the cause — some cases settle within a few days with dietary management, while others recur or need ongoing treatment. Because colitis has several possible causes, your vet is best placed to say what to expect for your dog specifically.
- Can stress cause colitis in dogs?
- Yes, stress is a recognised trigger for colitis in some dogs, alongside causes like dietary indiscretion, parasites and infection. If your dog has recurring episodes, it's worth mentioning any recent changes or stressors to your vet as part of working out the cause.
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.