Best dog food for a Bernese Mountain Dog
A Bernese Mountain Dog is a giant breed that grows fast and grows large, and both of those facts matter more at the bowl than they do for a mid-sized dog. A large-breed puppy food that controls the growth rate, followed by an adult diet that supports joints through a heavy adult frame, matters more here than any specific flavour or brand.
Feeding a Bernese Mountain Dog
A giant breed
An adult Bernese Mountain Dog typically weighs 35–55 kg, so a healthy Bernese Mountain Dog 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 7–10 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 Bernese Mountain Dog weigh?
Adult 35–55 kgfully grown at 18–24 months
| Age | Stage | Typical weight | Of adult size |
|---|---|---|---|
| 8 weeks | Just home | 3.1–4.8 kg | 9% |
| 3 months | Young puppy | 5–7.9 kg | 14% |
| 6 months | Growing fast | 10–15.7 kg | 29% |
| 12 months | Adolescent | 20–31.4 kg | 57% |
| 18–24 months | Fully grown | 35–55 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 Bernese Mountain Dog
Complete foods from our range, matched to a Bernese Mountain Dog'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 more than usual
Bernese Mountain Dogs can weigh well over 40kg as adults, and reaching that size too quickly as a puppy puts real strain on developing joints. A large-breed puppy food is formulated with controlled calcium and phosphorus levels specifically to slow that growth curve down to something a giant-breed skeleton can keep up with, rather than feeding for the fastest possible weight gain.
Skipping a large-breed formula in favour of a standard puppy food is one of the more common mistakes with giant breeds, because a standard formula is calorie-dense in a way that can push growth faster than is good for the joints. Checking the bag for a large or giant breed puppy label is worth doing before anything else.
Joint support through adulthood
The breed is known to be prone to hip and elbow dysplasia and other joint problems, which is a structural issue rather than something diet alone prevents, but a food that includes glucosamine and chondroitin, or a separate joint supplement alongside a good complete diet, is a sensible standing choice for a dog this size rather than something to wait and add later.
Weight control matters just as much as any added ingredient. Every extra kilogram a heavy-framed dog carries is more load on joints that are already working harder than a smaller breed's, so measuring portions against the food's own guide and adjusting for your individual dog's activity level is worth doing rather than free-feeding.
What changes as they age
Bernese Mountain Dogs have a shorter typical lifespan than many breeds their size, and joint and mobility support tends to become relevant earlier than it would for a smaller, longer-lived dog. Watching for early signs of stiffness, especially after rest, and moving to a senior or joint-focused diet sooner rather than later is a reasonable approach for this breed specifically.
A large or giant breed formula continues to matter in adulthood too, not just as a puppy, because the calorie needs and joint considerations of a dog this size are different from a food built around a 15kg dog's needs.
Common questions
- Do Bernese Mountain Dogs need large-breed puppy food?
- Yes, it is worth prioritising. Their fast growth to a large adult size makes controlled calcium and phosphorus levels genuinely useful for reducing strain on developing joints, which is exactly what a large or giant breed puppy formula is designed to manage.
- How much should I feed a Bernese Mountain Dog puppy?
- Follow the feeding guide on the specific food you are using as a starting point, based on your puppy's current weight and expected adult size, and adjust gradually if they are gaining too fast or too slowly. Your vet can help you judge their body condition at check-ups if you are unsure.
- Are Bernese Mountain Dogs prone to joint problems?
- Yes, hip and elbow dysplasia are recognised concerns in the breed. Diet alone will not prevent a structural issue, but controlled growth as a puppy, maintaining a healthy weight as an adult, and a food that supports joint health are all sensible parts of managing the risk.
- When should a Bernese Mountain Dog move to a senior diet?
- Often earlier than a smaller breed, given their shorter typical lifespan and earlier tendency toward joint and mobility issues. Watch for stiffness after rest or reluctance on stairs, and talk to your vet about the right time to change their diet for 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.