Dry dog food for loose stools
Loose stools in an adult dog are most often caused by a recent food change, something scavenged on a walk, or a stomach that is generally more sensitive than average, rather than a single food being inherently "bad". The most useful things to check are how any recent food change was introduced and whether the current food suits a sensitive digestion.
Sudden switching is the most common everyday cause
Changing a dog's food quickly, rather than gradually mixing old and new over seven to ten days, is one of the most common and entirely avoidable causes of loose stools in an adult dog. This applies even when moving to a food that is objectively good quality — the speed of the change matters as much as what the food actually is.
Dietary indiscretion — eating something scavenged on a walk, a rich treat, or a scrap of human food that does not usually feature in their diet — is another frequent and often overlooked cause that has nothing to do with their normal food at all.
What a sensitive-stomach food actually changes
A food formulated for sensitive digestion typically uses a single named protein source, easily digestible ingredients, and a balanced fibre content designed to support firm, consistent stools, rather than a mix of several proteins that gives a sensitive gut more to react to.
Consistency also matters more than any single ingredient: a dog whose stomach settles well on one recipe fed steadily, rather than frequent recipe rotation, is generally better off even if the rotation is between good-quality foods.
When it points beyond diet
Occasional loose stools that clear up within a day or two, especially after a known trigger like a food change or a scavenged treat, are common and usually nothing to worry about. Ongoing or recurring loose stools without an obvious cause, or stools accompanied by blood, weight loss or a change in appetite, are worth discussing with your vet rather than managing through food alone.
Keeping a brief note of anything unusual before the stools changed — a new treat, something scavenged on a walk, a recent worming date — gives your vet a useful starting point if the problem does not settle within a day or two on its own. It helps narrow down whether diet, a parasite or something else is the more likely cause, rather than guessing after the event.
What we stock
Everything below is in stock with us, priced with delivery worked out, and packed and posted by hand in the UK.

Forthglade Cold Pressed Small Dog Turkey
Cold-pressed grain-free dry food for small dogs and puppies, built on turkey
£16.99

Pooch & Mutt Salmon Oil
Scottish salmon oil for dogs, dosed by weight from toy breeds to giants
£13.99

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

Harringtons Adult Dog Salmon & Potato
Complete salmon and potato dry dog food with 21% protein in a 1.7KG bag
£6.25

Forthglade Cold Pressed Natural Turkey
Cold-pressed turkey kibble for dogs from 2 months, soft enough to mix with water for young pups
£45.99

Forthglade Cold Pressed Grain Free Salmon
Cold-pressed grain-free dry food for dogs, built on fresh and dried salmon
From£16.99

Forthglade Cold Pressed Grain Free Duck
Cold-pressed grain-free duck food with fruit and botanicals, in two bag sizes
From£16.99

Forthglade Cold Pressed Grain Free Chicken
Cold-pressed grain-free chicken food with fruit and botanicals, in three bag sizes
From£16.99

Burns Puppy Junior Original Chicken Rice
A complete puppy and junior food with dried chicken 31% and controlled fat at 15%
From£14.99

Forthglade Complete Meal Lightly Baked Turkey
A lightly baked complete dry food, 50% turkey, for adult dogs of any breed
From£12.49

Forthglade Complete Meal Lightly Baked Chicken
A grain-free complete dry food for adult dogs, lightly baked and built on 50% chicken
From£12.49

Forthglade Complete Meal Lightly Baked Lamb
A lightly baked complete dry food, 50% lamb, for adult dogs of any breed
From£12.49
Common questions
- How should I switch my dog to a new food to avoid loose stools?
- Mix increasing amounts of the new food with decreasing amounts of the old over seven to ten days, rather than switching in one go. This gives your dog's digestive system time to adjust and is one of the simplest ways to avoid an upset stomach from a food change.
- Does grain-free food help with loose stools?
- Not automatically. Grain is not a cause of loose stools for most dogs, and switching to grain-free without a specific reason will not necessarily help. A single named protein and consistent, easily digestible ingredients tend to matter more than whether grain is present.
- Should I add a probiotic if my dog has loose stools?
- A probiotic supplement can support a dog's gut during a period of digestive upset, but it is not a substitute for identifying the cause. If loose stools continue for more than a day or two, or recur often, speak to your vet rather than relying on a supplement alone.
- When are loose stools a sign of something more serious?
- If they last beyond a couple of days, recur regularly, or come with blood, weight loss, vomiting or a drop in appetite, it is worth having your vet check your dog rather than continuing to manage it through diet changes alone.
Related
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.

