Best dog food for a Saint Bernard
A Saint Bernard is a giant breed, and the two things that matter most in their food are controlled growth as a puppy, to protect developing joints, and genuine joint support through adulthood, since this is a breed prone to hip and elbow issues given the sheer size and weight they carry.
Feeding a Saint Bernard
A giant breed
An adult Saint Bernard typically weighs 54–82 kg, so a healthy Saint Bernard eats a lot, and the sack size matters as much as the recipe compared with other breeds. Every feeding guide on a bag is written per kilo of body weight, not per breed — start there, then adjust to the dog in front of you.
Life stage
A giant breed is usually done growing at 18–24 months, which is roughly when a puppy food has finished its job. With a typical lifespan of 8–10 years, there is a long adult stretch in the middle; switch to a senior food when your vet thinks it is worth it rather than on a birthday.
Joint support is worth looking for
Their size and frame put more load through the joints than a smaller dog carries, so a food with joint support on the label is worth reading for — and keeping them lean does more for their joints than any supplement.
Weight matters more than usual here
A long back or a heavy frame makes every extra kilo count twice. Weigh portions rather than eyeballing a scoop, and reduce the food rather than the walks if the waist starts to disappear.
How much should a Saint Bernard weigh?
Adult 54–82 kgfully grown at 18–24 months
| Age | Stage | Typical weight | Of adult size |
|---|---|---|---|
| 8 weeks | Just home | 4.7–7.2 kg | 9% |
| 3 months | Young puppy | 7.7–11.7 kg | 14% |
| 6 months | Growing fast | 15.4–23.4 kg | 29% |
| 12 months | Adolescent | 30.9–46.9 kg | 57% |
| 18–24 months | Fully grown | 54–82 kg | 100% |
A guide, from the same rule of thumb our puppy growth predictor uses — each age is that share of the way to maturity for a giant breed. Puppies grow fastest early, so a real puppy usually sits a little above the middle rows. Weigh yours and ask your vet if the number worries you.
Complete dog foods that suit a Saint Bernard
Complete foods from our range, matched to a Saint Bernard's size band and what the breed typically needs. Stock levels and delivery dates are live on each product.
Field & Trial Skinner S Field Trial Light Senior
A lower-fat dry food for older, overweight or less active dogs, including working breeds
From£9.85
Autarky Complete Grain Free Adult Turkey
Grain-free complete dry food for adult dogs, with turkey and a marine-algae joint care package
£12.79
Autarky Grain Free Tasty White Fish & Potato Complete
Grain-free dry dog food built around white fish meal rather than poultry
£12.99
Lily's Kitchen Lily S Kitchen Dog Lovely Lamb
Complete lamb-led dry dog food offered in two practical bag sizes
From£25.15
Burns Adult/Senior Weight Control Chicken and Oats
A low-fat weight control dry food for adult and senior dogs, oat-based
£35.99
Burns Adult Large/Giant Breed Chicken and Brown Rice
Complete large-breed dry dog food with 23% chicken and brown rice
£59.99
Burgess Greyhound and Lurcher Chicken
Complete adult dry food formulated for the specific build of greyhounds and lurchers
£35.35
Naturo Senior Rice Poultry Variety 6pk
Six 400g trays across three recipes for senior dogs, with glucosamine and chondroitin
£10.29
Naturo Senior Dog Turkey with Rice and Vegetables 7pk
Turkey at 65% in a senior wet tray, with brown rice, vegetables and added joint support
£11.99
Why growth rate matters so much for a giant breed
Saint Bernards grow to a very large adult size, and growing too quickly as a puppy puts far more strain on developing bones and joints than reaching the same adult size more gradually. A large or giant-breed puppy formula is specifically built to control that growth rate rather than maximise it.
This is one of the clearer breed-specific feeding decisions there is: a standard puppy food not designed with a giant breed in mind can encourage faster growth than is healthy for a dog that will eventually weigh this much, so checking the pack states it is suitable for large or giant breeds matters here.
Joint support through adulthood
Hip and elbow dysplasia are well-documented concerns in Saint Bernards, given how much weight their joints carry throughout life. An adult food with added glucosamine and chondroitin, or a separate joint supplement, is a sensible ongoing precaution rather than something to only consider once problems appear.
Keeping a Saint Bernard at a healthy weight matters just as much as any supplement — every extra kilogram this breed carries adds meaningful load to joints that are already working hard, so measuring food rather than free-feeding is worth taking seriously.
A genuinely large appetite to plan around
A fully grown Saint Bernard eats considerably more than most breeds simply because of their size, so budgeting for the ongoing cost of a large bag of quality food is worth factoring in from the start, rather than being surprised by it once your puppy reaches adult size.
A wide, low-sided slow feeder bowl is also worth considering, given how much food a Saint Bernard gets through at each sitting — a bowl sized for a much smaller dog does not suit the volume this breed needs, and a design built to slow a fast, eager eater helps more with a giant breed's typically enthusiastic pace at mealtimes.
Common questions
- Should Saint Bernard puppies be fed a large-breed formula?
- Yes, this matters more for this breed than for most. A large or giant-breed puppy food is designed to control growth rate, which protects developing joints in a dog that will eventually be very heavy. A standard puppy formula not built for this can encourage growth that is too fast.
- Are Saint Bernards prone to joint problems?
- Yes, hip and elbow dysplasia are well-documented concerns in this breed, largely a consequence of their size and weight. A food with added joint-support ingredients, kept up alongside a healthy weight, is a sensible ongoing precaution through the dog's life rather than a reactive measure.
- How much should I feed a Saint Bernard?
- This depends on your individual dog's weight, age and activity level, and the feeding guide on your chosen food is the right starting point. Given how much extra weight strains this breed's joints, monitoring body condition and adjusting portions accordingly matters more than for a smaller, lighter breed.
- Does a Saint Bernard need a specific protein source?
- There is no single required protein for the breed. A named, quality protein source and a formula appropriate to their giant-breed size and life stage matter more than the specific type of meat used, unless your vet has identified a particular sensitivity in your individual dog.
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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.