Does My Dog Need a Fibre Supplement?

What is fibre?

Fibre is a carbohydrate. It is the indigestible part of plant foods found in vegetables, fruits, grains, seeds and legumes.  There are two types of fibres, insoluble and soluble fibres. Insoluble fibre helps speed up the passage of food through the gut and add bulk to the stool. Soluble fibre can dissolve in water and assists with slowing down digestion, improving gut health and regulating blood sugar levels. Fibre helps your dog maintain a healthy, happy and balanced gut, allowing for regular bowel movements and improved colon health.  

As humans, most of us know the benefits of dietary fibre in improving our digestive health and regulating our bowel movements. But what about dogs?

Many people think that dogs are carnivores and only need to eat meat and protein. Dogs are in fact omnivores and should ideally eat a mixture of meat protein and plant material. This means their diet should accommodate this. The plant fibre that dogs consume provides a nutrient that is critical for their digestive well-being. 

You've probably heard that fibre is important for your own gut health. But your dog's digestive system needs it too, for a lot of the same reasons.

Many dogs don't get enough fibre from their regular diet. This is especially the casefor those who are picky eaters. If your dog is one of them, their gut (and poos) will let you know.

Quick Answers

• Fibre is essential for healthy digestion in dogs. It regulates bowel movements, feeds beneficial gut bacteria, and supports colon health
• There are two types: soluble (helps slow digestion and firm loose stools) and insoluble (adds bulk and keeps things moving)
• Signs your dog might benefit from a fibre supplement include inconsistent stools, constipation, frequent loose motions, or straining to poo
• Not all dogs need a supplement. Those eating a complete, balanced diet with regular well-formed stools may be fine without one
• Always check with your vet before adding a fibre supplement, especially if your dog has an underlying health condition

What is Fibre, and Why Do Dogs Need it?

Fibre is a type of carbohydrate found in plant foods. Unlike other carbohydrates, it can't be fully broken down and absorbed in the small intestine. Instead, it travels to the large intestine, where it does some of its most important work.

There are two main types, and they do different things:

1. Soluble fibre dissolves in water to form a gel-like substance. It slows digestion, helps regulate blood sugar, and can help firm loose stools. Psyllium husk is one of the most studied soluble fibres for dogs.
2. Insoluble fibre doesn't dissolve. It adds bulk to stools and helps speed the passage of food through the gut, which is what you want if your dog is constipated or sluggish in the bowel department.

No matter what fibre supplement your dog takes, it’s important that they have an adequate water intake. Both types of fibre need water to be effective, otherwise hard, dry stools and gassiness can occur. If your dog isn’t a great drinker, try adding extra water to their food.

Does My Dog Need a Fibre Supplement?

Most dogs that are eating a quality, complete and balanced diet, and are passing well-formed regular stools, are likely getting enough fibre from their food. But some dogs need more than their diet provides.

Signs your dog might benefit from added fibre:

• Stools that are inconsistent (sometimes firm, sometimes soft)
• Straining to go, or only passing small amounts
• Dry, hard, pellet-like stools (constipation)
• Mucus in the stool
• Frequent loose motions, usually small-volume or chronic large-bowel diarrhoea
• Excessive scooting or anal gland issues
• Frequent dietary changes, home-cooked meals or fussy eaters

That said, not every dog with an off day needs a supplement. If your dog has one dodgy poo and then bounces back, that's probably not a sign of a fibre deficiency. It's when the issue is persistent or recurring that it's worth investigating.

What Are the Benefits of Fibre for Dogs?

When it's the right fit for your dog, fibre can:

• Regulate bowel movements 
• Help manage chronic large-bowel diarrhoea
• Relieve constipation
• Support colon health by fuelling colonocytes (the cells that line the colon wall)
• Feed beneficial gut bacteria, supporting the broader gut microbiome
• Help with healthy weight management by promoting a feeling of fullness
• Potentially assist with anal gland health by improving stool consistency

Can Too Much Fibre Cause Problems?

Yes. Over-supplementing with fibre can cause its own digestive issues, including loose stools and excessive gas. That’s why veterinary guidance is important, and starting low with gradual adjustments is the smart approach.

It's also worth noting that certain fibres can interfere with the absorption of some nutrients if used in very high quantities. So, it’s important to use it thoughtfully, at an appropriate dose for your dog's size and health status.

If you're unsure where to start, your vet is the best person to ask.

What to Look For in a Dog Fibre Supplement

Not all fibre supplements are formulated the same or contain the same ingredients. Here are a few things to look for:

• Soluble vs insoluble fibre
• Prebiotics and/or postbiotics to support the broader gut microbiome (fibre and gut bacteria work best together)
• Natural flavouring 
• Formulated specifically for dogs, at appropriate doses
• Vet-developed or vet-reviewed product

Our dog supplements range includes organic dog fibre supplements with prebiotics, postbiotics, and paraprobiotics to support gut health. It helps regulate bowel movements by either firming loose stools or softening firm ones, and it adds naturally to meals without a fuss. You can also explore our dog food toppers and full range of dog care products for everything your dog needs inside and out.

As with any supplement, have a chat with your vet first, especially if your dog has existing health concerns. They can help you decide whether fibre is the right move and in what form.