Best dry dog food for a St Bernard
A St Bernard needs a dry food built for a giant breed — controlled, slower growth as a puppy to protect developing joints, and a lower calorie density as an adult than the dog's sheer size might suggest, since St Bernards are calmer and less active than many large breeds and joint support matters throughout their life.
Why giant-breed puppy food matters so much here
St Bernards are one of the largest common dog breeds, and giant breeds are more prone to developmental joint problems, including hip and elbow dysplasia, if they grow too quickly as puppies. A large or giant-breed-specific puppy food controls calcium, phosphorus and calorie density to slow growth to a steadier, joint-friendly pace, rather than the fast, energy-dense feeding that suits a smaller breed.
This matters more for a St Bernard than for most breeds, because the sheer adult size means any joint problem that develops young carries more weight, literally, for the rest of the dog's life. Skipping a proper giant-breed puppy formula in favour of a standard one is one of the more consequential food choices you can make for this breed.
Feeding an adult St Bernard
As adults, St Bernards are a relatively calm, lower-energy giant breed compared with something like a working-line large breed, so they don't necessarily need as calorie-dense a food as their size implies — overfeeding relative to their actual activity level is a common way giant breeds end up overweight, which then adds further strain to joints already carrying a lot of weight. A dry food formulated for large or giant breeds, fed to the amount that maintains a healthy body condition rather than a fixed large portion, is the better approach.
Joint-supporting ingredients like glucosamine and chondroitin, either built into the food or added as a separate supplement, are worth considering for this breed given their predisposition to joint issues, ideally discussed with your vet as part of an overall plan rather than added on a hunch.
What to look for on the label
Check for a food explicitly labelled for large or giant breeds at the relevant life stage, a named protein, and — for puppies specifically — controlled calcium and phosphorus levels rather than a generic 'all breed' puppy formula. For adults and seniors, a moderate rather than high calorie density suits a breed prone to weight gain on an inactive day.
St Bernards can also drool heavily and eat with enthusiasm, so a slower-feeding approach — a slow-feeder bowl rather than a standard one — can help manage both messy eating and the pace at which a big dog finishes a meal.
Foods that suit this breed
Everything below is in stock with us, priced with delivery worked out, and packed and posted by hand in the UK.

Forthglade Soft Bite Grain Free Joints & Bones Treats
Grain-free salmon dog treats with salmon oil, glucosamine and chondroitin
£2.45

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

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

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

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

Forthglade Cold Pressed Grain Free Turkey
Grain-free cold-pressed turkey kibble for dogs, gentle on sensitive stomachs
£69.69

Harringtons Puppy Turkey & Rice
Complete turkey puppy food with 30% protein and feeding bands by adult weight
£6.49
Common questions
- Do St Bernards need giant-breed puppy food?
- Yes, this is one of the more important food decisions for the breed — a giant-breed puppy formula controls growth rate and calcium levels to protect developing joints, which matters more for St Bernards than for most other breeds given their eventual size.
- How much should I feed an adult St Bernard?
- Start with the feeding guide for a large or giant breed food based on your dog's weight, then adjust based on their actual activity level and body condition — St Bernards are a calmer breed and can gain weight easily if fed as much as their size alone might suggest.
- Are St Bernards prone to joint problems?
- Yes, as a giant breed they're more susceptible to hip and elbow dysplasia and other joint issues, which is part of why controlled growth as a puppy and maintaining a healthy weight as an adult both matter so much for this breed specifically.
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.