Dog eating a fibre-rich meal - best dog food for anal gland issues
on September 04, 2026

Best Dog Food for Anal Gland Issues: Fibre, Foods That Help & UK Breed Data

Short answer: the best dog food for anal gland issues is one that produces firm, well-formed stools — in practice, a fibre content of around 5% or more (higher than the 2.5–5% typical for healthy adult dogs), because stool consistency is what naturally expresses the glands. Diet is one of the biggest factors you can actually control, but it isn't the whole picture: breed, weight and skin allergies all play a part. Below, we cover the UK data on which dogs are most affected, the real mechanism behind why fibre works, what to look for in a food, the specific foods that help, the other risk factors diet won't fix, and how to build a routine around it — including where our Gland-EZe chews fit alongside a good diet.

Written by Jamie Sinclair, who writes about canine health, nutrition, and everyday care for Doggy Dailies — focused on translating veterinary research and real ingredient science into practical, honest guidance UK dog owners can use.

Table of Contents

Why Diet Matters for Anal Gland Health

A dog's anal glands empty naturally during normal bowel movements — firm, well-formed stools apply the right pressure as they pass, helping the glands express on their own. When stools are too soft, the glands don't get that natural pressure, and issues like scooting, that fishy smell, discomfort, and gland impaction become more likely.

This is why the best dietary approach for dogs with anal gland issues isn't about a single "miracle" food — it's about consistently supporting firm, healthy stools. As a practical benchmark, most healthy adult dogs do well on a fibre intake of around 2.5–5% on a dry-matter basis, but dogs with recurring anal gland issues often benefit from a higher fibre content, closer to 5% or more (Whole Dog Journal). For a full explanation of how the glands work and the signs of trouble, see our anal gland health guide.

Which Dogs Are Most Affected? The UK Data

The best evidence comes from the RVC's VetCompass programme, which analysed the records of 104,212 dogs across 110 UK practices and found anal sac disorders in 4.4% of dogs in a single year — nearly four in five of them impactions. Breed made a striking difference: Cavalier King Charles Spaniels (3.3× the odds of a crossbreed, with almost 15% affected in a year), King Charles Spaniels, Cockapoos, Shih-tzus, Bichon Frises and Cocker Spaniels were all at increased risk, while Boxers, German Shepherds, Lurchers, Staffies, Border Collies and Labradors were at reduced risk. Flat-faced breeds had 2.6× the odds of long-faced breeds, and spaniel types roughly double (O'Neill et al., 2021, Veterinary Record). If you own one of the high-risk breeds, diet is worth getting right before problems start, not after.

Soluble vs Insoluble Fibre: The Real Mechanism

Most advice says "add fibre" without explaining that soluble and insoluble fibre do genuinely different jobs, and a good anal-gland diet usually needs both. Insoluble fibre (found in things like beet pulp, wheat bran, and vegetable skins) doesn't dissolve in water — it passes through largely intact, physically adding bulk and speeding up transit time, which is what gives stool the firm structure and mass needed to press against the glands as it passes. Soluble fibre (found in psyllium, oats, and pumpkin) dissolves and is fermented by gut bacteria into short-chain fatty acids (SCFAs), which feed the cells lining the gut and help draw water into the stool — useful for softening stools that are too hard, or for stabilising ones that are too loose, depending on the amount used.

The research backs up using fibre this way specifically for firming stool: a controlled trial giving psyllium (a soluble fibre) to dogs with conditions predisposing them to constipation found stool consistency improved from "dry" or "hard" to "normal" in 62.5% of dogs (Tortola et al., 2009). More recent microbiome research has found that different fibre sources genuinely activate different gut bacteria and produce different SCFA profiles, meaning the specific type of fibre — not just the total amount — matters for the outcome (Bhosle et al., 2025, mSystems). In practice, this is why the best anal-gland-focused foods and supplements tend to combine a soluble source (like pumpkin or psyllium) with an insoluble one (like beet pulp), rather than relying on just one.

It's Not Always Just Diet

It's worth being honest that diet is one factor among several, not the whole picture. According to Dr Brian Collins, a veterinarian at Cornell University's Riley Canine Health Center, anal sac disease can also be influenced by food-allergy or atopic dermatitis, physical abnormalities of the anal sacs themselves, chronic diarrhoea or constipation, and obesity — alongside a low-fibre diet (Whole Dog Journal). The allergy link matters more than owners expect: a dog that also has itchy skin, ear problems or paw-licking may have gland trouble driven by allergy, and a high-fibre diet on its own won't fix that. If your dog's issues persist despite genuine dietary changes, one of these other factors may be involved, and it's worth discussing with your vet rather than assuming diet alone will resolve it.

What to Look For in a Dog Food for Anal Gland Issues

  • Adequate fibre, of both types — look for named fibre sources such as beet pulp, psyllium husk, bran, oat or rice hulls, cellulose or alfalfa, and a crude fibre figure at or above 5%
  • High-quality protein — poor-quality fillers can contribute to looser stools in some dogs
  • Consistent feeding — sudden diet changes can disrupt stool consistency; introduce anything new over 7–10 days
  • Adequate hydration — supports healthy digestion overall, and dry, small stools can be just as unhelpful as soft ones; wet food or a splash of water on kibble helps dogs that don't drink much
  • Omega-3 fatty acids — support a normal inflammatory response, which may help with general comfort in dogs prone to gland irritation and skin allergy
  • Healthy weight — obesity is a recognised risk factor for anal gland issues independent of diet quality, so portion control matters alongside what's actually in the bowl
Fresh pumpkins, a fibre-rich food that supports dogs' anal gland health

Foods That Help Dogs Express Their Anal Glands

Adding fibre to an existing diet is often easier than switching food entirely. Dog-safe options, all introduced gradually:

Food Fibre type How to give it
Plain pumpkin (tinned 100% pumpkin or cooked) Soluble — firms loose stools and softens hard ones 1 tsp for a small dog, 1 tbsp for a large dog, mixed into a meal
Green beans Mixed — high fibre, very low calorie, ideal for overweight dogs A small handful, raw or steamed, no salt
Sweet potato Mixed — fibre plus slow-release energy Cooked and mashed, a spoonful with food
Psyllium husk Soluble — concentrated, a little goes a long way ½–1 tsp with plenty of water, on your vet's advice
Apple or carrot (no core or seeds) Mixed — fibre in treat form A few slices as a swap for shop treats

Two cautions: more isn't better — too much fibre causes wind and loose stools, which defeats the object — and any addition counts towards daily calories, so trim the main meal slightly.

Veterinary High-Fibre Diets

For dogs with recurrent impactions, UK vets often suggest a prescription high-fibre gastrointestinal diet (the Royal Canin and Hill's ranges both have one). These are formulated with fibre levels well above ordinary foods and a controlled fat content, and for some dogs they're the single most effective change. They're more expensive and not needed for every dog, but if you've had two or three vet visits for gland expression in a year, it's a conversation worth having.

Transitioning to a Higher-Fibre Diet Without Upsetting Your Dog's Stomach

Jumping straight to a high-fibre food or a full serving of a new fibre supplement is the most common reason owners give up on this approach too early, since a sudden large increase in fibre can cause exactly the gas and loose stools you're trying to avoid. Introduce any new food or fibre addition over 7 to 10 days, mixing increasing proportions of the new with the old, and start any powder or husk supplement at half the suggested serving for the first few days. If you notice excess wind, bloating, or looser stools at any point, hold at that level for a few extra days before increasing further rather than pushing on regardless.

Beyond Diet: Supporting Gut and Anal Gland Health

Doggy Dailies Gland-EZe anal gland support chews jar with pumpkin and prebiotic fibre

Alongside a well-balanced diet, many owners add a daily supplement formulated specifically to support digestion and anal gland function. Our Gland-EZe chews combine pumpkin powder (460mg, soluble fibre) and VitaFiber prebiotic fibre (250mg) with a gut health enzyme blend and Bacillus probiotic strains, designed to work alongside your dog's regular diet — not replace it — to support firmer stools and proper gland emptying. Rated 4.7 stars from 70 reviews.

How Long to Give It

Dietary and supplement changes need a real trial period to judge fairly — give any change 3 to 4 weeks of consistent use before deciding whether it's helping. If there's no meaningful improvement after that, it's a genuine signal to loop in your vet rather than continuing to adjust diet indefinitely on your own.

When to See a Vet

Diet and supplements can make a real difference for many dogs, but persistent or worsening scooting, visible swelling beside the anus, discharge, blood, or a strong odour warrant a vet visit — an impacted gland can abscess, which is painful and needs treatment. Some dogs need manual gland expression or, in recurring cases, investigation into one of the other risk factors covered above.

FAQ

What's the best dog food for anal gland issues?
A food with a crude fibre content of around 5% or more from named sources like beet pulp or psyllium, high-quality protein, and consistent feeding — the goal is firm, well-formed stools that naturally express the glands during bowel movements.

What foods help dogs express their anal glands?
Plain pumpkin, green beans, sweet potato, psyllium husk and small amounts of apple or carrot all add fibre that firms the stool. Introduce them gradually and don't overdo it.

What's the difference between soluble and insoluble fibre for anal gland health?
Insoluble fibre adds physical bulk to firm the stool; soluble fibre ferments into short-chain fatty acids and helps regulate moisture. Most effective anal-gland diets combine both types rather than relying on just one.

Which breeds get anal gland problems most?
UK data shows Cavalier King Charles Spaniels, King Charles Spaniels, Cockapoos, Shih-tzus, Bichon Frises and Cocker Spaniels are at highest risk, and flat-faced breeds generally; Boxers, German Shepherds and Labradors are at lowest risk.

Is diet the only cause of anal gland issues?
No — according to veterinary sources, allergic skin disease, physical abnormalities of the anal sacs, chronic diarrhoea or constipation, and obesity can all play a role alongside diet.

How long before I know if a diet change is working?
Give it 3 to 4 weeks of consistent use before judging results. If there's no real improvement by then, speak to your vet.

Can supplements help alongside diet?
Yes — a supplement with pumpkin, prebiotic fibre and probiotics can support the same goal as dietary changes, working alongside a good diet rather than replacing it.

Sources

This article is for general information and isn't a substitute for advice from your vet, especially if your dog has recurring or worsening anal gland issues.

Ready to support your dog's anal gland health? Shop Gland-EZe or browse our full range of dog supplements.

Related: More on Anal Gland Health