What to feed a dog with constipation
A dog who is mildly constipated often improves with more fibre and more moisture in their diet, alongside making sure they're drinking enough water and getting regular exercise, which helps keep the gut moving. This is about supporting a healthy dog through an occasional, mild bout — persistent or severe constipation needs a vet, not just a change of food.
Why fibre and moisture help
Fibre adds bulk to stools and helps them move through the gut more easily, which is why foods or additions with a good fibre content — plain cooked pumpkin is a common example many owners use — are often suggested for mild, occasional constipation. Moisture matters just as much: a dog who isn't drinking enough, or is eating an entirely dry diet with no other fluid intake, can produce firmer stools that are harder to pass.
Switching some meals to a wet food, or adding a small amount of water to dry kibble, increases moisture intake directly, and encouraging your dog to drink more generally — a second water bowl, a pet water fountain, wetting food — is a simple, low-risk thing to try alongside any dietary change.
What to look for on a label
A moderate fibre content, without being so high that it causes the opposite problem of loose stools, is generally what's wanted for a dog with occasional constipation. Some complete foods include added probiotics, which support a healthy gut microbiome and can help with overall digestive regularity, though they're a supportive measure rather than a targeted treatment for an existing bout of constipation.
Avoid making a sudden, complete diet change if your dog is already constipated, since a rapid switch can unsettle digestion further — introduce any new food gradually over several days, mixed increasingly with the old, the same way you would for any dietary change.
Other things that help alongside food
Regular exercise genuinely helps keep a dog's digestive system moving, so a dog who has become less active — due to age, an injury, or simply a quieter few days — may become more prone to constipation independent of what they're eating. A calm, accessible toileting routine matters too; a dog who is anxious, in an unfamiliar place, or in discomfort when toileting may hold on, which can make constipation worse.
If your dog has recently eaten something unusual — a bone, a foreign object, a large amount of grass or fabric — that's worth mentioning to your vet specifically, since these can cause or worsen constipation and sometimes need more than a dietary fix.
When it needs a vet, not just a food change
See a vet if your dog hasn't passed a stool in more than a day or two, is straining repeatedly with little or no result, appears to be in pain when trying to toilet, has a swollen or hard abdomen, or is vomiting alongside the constipation. These can point to a blockage or another underlying problem that needs proper investigation rather than home management.
A dog who seems constipated but is also lethargic, off their food, or generally unwell should be seen the same day — constipation combined with other symptoms is a different situation to an otherwise healthy dog having an occasional mild bout.
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
AniForte Premium Feeding Oil Inc Linseed, Hemp, Salmon Oil
A 500ml feeding oil blend of linseed, hemp, black cumin and salmon oil for dogs
£15.99
Pooch & Mutt Salmon Oil
Scottish salmon oil for dogs, dosed by weight from toy breeds to giants
£13.99
Vetzyme High Strength Flexible Joint Tablets
Ninety joint bites for dogs, with omega 3 fish oil, glucosamine, chondroitin and MSM
£21.60
Vetiq Nutri-Vit Plus Paste Dog
VETIQ Nutri-Vit Plus high-calorie paste for dogs and puppies, supplied in a 100g tube
£8.08
Pooch & Mutt Health & Digestion Bionic Biotic
A puppy-friendly, chicken-free supplement blend for gut, skin and coat health, 200g
£12.49
Johnson's Fishys Salmon Oil
Cold-pressed North Atlantic salmon oil for cats and dogs, poured over food.
£9.89
Bugalugs Digestive Pre Probiotic Paste
A probiotic paste for sudden loose stools, with kaolin and live bacteria
From£15.99
Turkey Tail Mushroom & Probiotic Powder
A bacon-flavoured turkey tail mushroom and probiotic powder you sprinkle over food. Made to support immunity, energy and gut health, with scoop guidance for every weight from small to large pets.
£13.99
Johnson's Stool Firmer Dog
Vitamin and mineral sachets for dogs over 12 weeks, to help firm up loose stools
£7.79
Supernature Slurpeez Bone Broth Powder Chicken
A 100% chicken bone broth powder for dogs and cats, made up with hot water or sprinkled dry
£7.99
Common questions
- Is pumpkin good for a constipated dog?
- Plain, cooked pumpkin (not pie filling, which contains added sugar and spices) is a fibre source many owners use for mild, occasional constipation, added in a small amount to a meal. It's a supportive measure rather than a treatment for a serious or ongoing problem.
- How long can a dog go without pooping before it's a concern?
- Going more than a day or two without a bowel movement, especially alongside straining or discomfort, is worth a vet visit rather than waiting longer to see if it resolves on its own.
- Can changing my dog's food too quickly cause constipation?
- Yes, a sudden diet change can unsettle a dog's digestion in either direction, including causing temporary constipation. Introducing new food gradually over several days reduces this risk.
- Should I give my dog more water if they're constipated?
- Yes, encouraging more water intake — through a second bowl, a pet fountain, or adding water to meals — supports softer, easier-to-pass stools alongside any dietary fibre changes.
- When is dog constipation an emergency?
- If your dog is straining without result, has a hard or swollen abdomen, is vomiting, or seems to be in pain, that's an emergency rather than something to manage at home — these can indicate a blockage that needs urgent veterinary attention.
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.