What to feed a dog with a liver shunt
A dog diagnosed with a liver shunt, or portosystemic shunt, needs a specific therapeutic diet worked out with a vet, typically a veterinary-prescribed formula rather than anything available on a general pet food shelf. This page explains what the condition means for feeding and what the diet is trying to manage — it is not a substitute for the plan your vet will put together for your individual dog.
What a liver shunt means for digestion
A portosystemic shunt is an abnormal blood vessel that allows blood from the digestive tract to bypass the liver, meaning toxins and waste products that the liver would normally filter out — ammonia from protein breakdown in particular — can build up in the bloodstream instead. This is why diet is such a central part of managing the condition: what and how much protein a dog eats directly affects how much of that waste the body has to deal with.
The general aim of a liver shunt diet, set by a vet, is usually a controlled amount of high-quality, highly digestible protein — because the goal isn't simply less protein, it's less of the by-product that an already-struggling system has to process, which is a more nuanced balance than a simple low-protein food achieves on its own.
Why this needs a vet-directed diet, not a shop shelf
Getting the protein type, amount and overall diet balance right for a liver shunt is a clinical decision that depends on the severity of the shunt, whether it's being managed medically or surgically, and how the individual dog is responding over time — it is not something to work out from a food label alone. This is exactly the kind of situation where feeding the wrong thing, even with good intentions, can make a dog measurably worse rather than better.
If your dog has been diagnosed with a liver shunt, your vet will either prescribe a specific therapeutic diet or refer you to one, and that plan should be followed and reviewed with them directly rather than adjusted based on general information, including this page.
What actually helps day to day
Frequent small meals are commonly recommended for dogs managing a liver shunt, since smaller, more frequent feeds put less sudden load on the system than one or two large meals — a slow feeder or a divided bowl can help make that manageable if your dog tends to eat quickly. Consistency matters too: sticking closely to the prescribed diet and feeding schedule, rather than varying it, gives the clearest picture of how well the management plan is working.
Watch for and report any change in behaviour, appetite, or signs like disorientation or unsteadiness to your vet promptly, since these can indicate the condition needs the management plan reviewed rather than something to wait out.
Treats and anything given outside the main meals need the same care as the diet itself — a rich or high-protein treat can undo the balance a vet has carefully worked out, so check with them before adding anything, including something as ordinary-seeming as a training treat or a plain piece of meat, to what your dog is otherwise eating.
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.
Classic Feed Dishes
Two stainless steel dishes (470ml, 950ml or 1.9 litres each) in a raised wire frame, so the water gets refilled too
From£7.39
Slow Feeder Plate Green
A shallow-pocketed feeding plate that slows a dog down without making it hunt
£13.95
Tarhong Concentric Circle Slow Feeder Bowl for Dogs & Cats
A stylish slow-feeder bowl that encourages healthier, calmer mealtimes — available in blue, grey, or white.
£14.99
Slow Feeder Plate Orange
A 35 x 26cm slow feeder plate that spreads a meal into shallow pockets
£13.95
Silicone Slow Feeder Dog Bowl With Mat
A silicone slow-feeder bowl set into a spill-catching tray mat. The ridged centre slows fast eaters and aids digestion, while the raised mat keeps food and water mess off the floor. Soft, non-slip and easy to wipe clean.
From£13.99
Tarhong Medallion Slow Feeder Puzzle Dog Bowl
A stylish BPA-free puzzle bowl that slows down greedy eaters — available in three sizes and a choice of colours.
From£10.99
Classic Non Slip Slow Feeder
Stainless steel slow-feeder dishes with raised centre and rubber rim
From£8.90
Silicone Swirl Lick Mat Slow Feeder
A round silicone lick mat with a swirling textured surface that holds wet food, yogurt or paste to slow eating and soothe anxious pets. A suction base keeps it steady on the floor.
£16.99
Sunflower Snuffle Mat Slow Feeder
A felt sunflower snuffle mat, roughly 37.5cm across, with yellow petals and a fluffy brown centre that hides kibble and treats. Encourages natural foraging to slow fast eaters and ease boredom. Ties on to fix it in place; machine washable.
£12.99
Spherical Slow Feeder Licking Bowl
A spherical non-slip slow feeder that paces fast eaters and turns mealtimes into a calming licking ritual. The ridged surface slows gulping, aiding digestion and easing boredom for dogs and cats alike.
From£13.99
Tarhong Bone Puzzle Slow Feeder Dog Bowl — BPA-Free Polypropylene
A bone-shaped puzzle slow feeder that makes dogs work for their meals — helping reduce bloat, gulping, and boredom at the same time.
£19.49
Common questions
- Can I manage a liver shunt with an ordinary shop-bought dog food?
- No. This condition needs a specific, usually vet-prescribed therapeutic diet tailored to your individual dog's protein tolerance and how the shunt is being managed. An ordinary food is not formulated for this and shouldn't be used as a substitute.
- Why does protein matter so much with a liver shunt?
- The liver normally processes waste from protein breakdown, and a shunt allows some of that waste to bypass the liver and build up in the bloodstream. Managing the amount and type of protein eaten is central to reducing that burden, which is why it needs careful, individual clinical guidance.
- What are signs a liver shunt diet isn't working?
- Changes in behaviour, disorientation, unsteadiness, changes in appetite, or a general decline in condition are all reasons to contact your vet promptly rather than waiting to see if things settle on their own.
- Can a liver shunt be cured, or is diet permanent?
- Some shunts can be treated surgically, after which dietary needs may change, while others are managed medically long-term with diet as an ongoing part of that management. Your vet is the right person to explain the specific outlook and plan for your dog.
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.