Best dog food for loose stools
Occasional loose stools are often down to a diet change, a rich treat, table scraps or a sensitive stomach, and a single-protein, easily digestible food is usually the sensible place to start once anything more serious has genuinely been ruled out by a vet.
What usually causes it
A sudden switch of food, a rich treat, table scraps, or simply a change in routine can all trigger a short bout of loose stools in an otherwise healthy dog. This is common and usually settles within a day or two once the trigger stops, without needing a permanent diet change at all.
A genuine, ongoing sensitivity or intolerance is a different picture: stools that stay loose over weeks, or that come back every time a particular food or ingredient is reintroduced. That pattern is where a dedicated sensitive or limited-ingredient food is more likely to make a real difference than switching between ordinary foods at random.
What to look for on the label
Foods marketed as sensitive or limited-ingredient are usually built around a single named protein source rather than a mix of several meats, which makes it easier to identify and remove whatever doesn't agree with your dog. Many also include added prebiotics or fibre sources aimed at supporting normal gut function.
Grain-free isn't automatically the answer for a sensitive stomach — some dogs do better on it, plenty don't, and grain itself is rarely the actual cause of loose stools. The single-protein, limited-ingredient approach is generally a more useful place to start than chasing a grain-free label on its own.
How to change food without making it worse
A sudden switch is itself one of the most common causes of loose stools, so introduce any new food gradually over seven to ten days, mixing increasing amounts in with the old food rather than swapping overnight. This applies even when the new food is specifically chosen to help.
Give a genuine change several weeks to show whether it's actually helping, rather than judging it after a couple of days. If stools haven't improved by then, or get worse at any point, that's a conversation for your vet rather than trying yet another food on your own.
When it needs a vet, not a new food
Loose stools with blood, ongoing vomiting, weight loss, lethargy or a dog who seems generally unwell are not something to manage with a diet change alone, and need to be seen properly rather than waited out. The same goes for diarrhoea that continues beyond a couple of days regardless of what's being fed.
A food change is a reasonable first step for an otherwise well dog with mild, recurring loose stools, but it isn't a substitute for a proper diagnosis when something more is going on.
What we stock
Everything below is in stock with us, priced with delivery worked out, and packed and posted by hand in the UK.
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
Burns Adult/Senior Dog Sensitive Grain Free Turkey & Potato Dry Dog Food
Six-ingredient grain-free dry food for adult and senior dogs, single-source turkey
£15.49
Dr John Hypoallergenic Duck and Salmon
Hypoallergenic dry dog food for sporting and working dogs, duck and salmon based
From£7.49
Common questions
- What ingredients should I avoid if my dog has loose stools?
- There's no single ingredient that causes loose stools in every dog, which is why single-protein, limited-ingredient foods are useful — they let you identify what actually doesn't agree with your own dog rather than guessing at a universal culprit.
- Is grain-free food better for a dog with a sensitive stomach?
- Not automatically. Grain is rarely the real cause of loose stools, and some dogs do fine on grain-inclusive food while others do better grain-free. A single-protein, limited-ingredient food is generally a more useful starting point than choosing on the grain-free label alone.
- How long should I try a new food before judging if it's working?
- Give it several weeks rather than a few days, since a dog's gut needs time to adjust to any new food, including one specifically chosen to help. Introduce it gradually over seven to ten days first, mixed in with the old food, to rule out the switch itself as the cause.
- When should I take my dog to the vet about loose stools?
- If there's blood, ongoing vomiting, weight loss, lethargy, or the loose stools continue for more than a couple of days regardless of diet, see a vet rather than trying another food change. Those signs point to something that needs a proper look rather than dietary trial and error.
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.