Best puppy food for a St Bernard
St Bernards are a giant breed with a rapid early growth rate, and that combination is exactly why controlled-growth, large-breed puppy food matters here more than for most other dogs. Growing too fast, too early, puts real strain on developing joints in a puppy destined to reach this kind of adult size.
Why controlled growth matters so much for this breed
A St Bernard puppy can go from a few kilograms at birth to well over 50kg as an adult, and that scale of growth needs managing carefully. A standard puppy food, calorie-dense to support smaller and medium breeds, encourages faster growth than a giant breed's developing skeleton and joints can comfortably keep up with.
Large and giant-breed puppy formulas are built specifically to slow that growth rate down, using controlled calorie density and calcium levels, which reduces the strain on hips, elbows and other joints during the period when a puppy is putting on the most size.
What to check on a giant-breed puppy food
Look for a food explicitly labelled for large or giant breeds, and check that calcium and phosphorus levels are stated and balanced rather than left vague — this is one of the clearer signals that a food has been formulated with this kind of growth in mind rather than adapted from a general puppy recipe.
A quality protein source still matters for building muscle and supporting overall development, but it should sit alongside that controlled energy density rather than in place of it. A rich, high-calorie food is not automatically better for a puppy this size.
When to move to adult food
Giant breeds mature more slowly than smaller dogs, and St Bernards typically stay on a large-breed puppy formula longer than most, often into their second year rather than switching at twelve months. The specific food's own guidance, alongside a vet's view of your individual dog's development, is the right way to time that change.
Switching too early to a standard adult food can undo some of the benefit of controlled growth, so it is worth checking rather than assuming a St Bernard follows the same timeline as a medium-sized breed.
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.
Pedigree Tasty Minis Puppy Treats Chewy Cubes with Chicken
Soft chewy puppy training treats with 13% chicken and added calcium, 125g
£2.25
Forthglade Complete Puppy Chicken with Liver Grain Free — 18 x 395g Trays
Sold as a case: 18 x 395g trays. A complete grain-free wet food for puppies, built on 71% chicken and 4% chicken liver
£35.89
Bakers Puppy Superfoods Chicken with Vegetables
Bakers Puppy Chicken & Vegetables dry dog food, 12.5kg, complete food for puppies from 6 weeks to 24 months
£39.15
Harringtons Puppy Turkey & Rice
Complete turkey puppy food with 30% protein and feeding bands by adult weight
£6.49
James Wellbeloved Grain Free Puppy/Junior Dry Dog Food Turkey & Veg
Grain-free turkey and potato kibble for puppies and junior dogs, evenly balanced recipe
£12.75
Wagg Puppy Treats
Puppy Treats in a 120G pack, with 23.2% protein and 7% fat and full label detail
£1.49
Burns Puppy Junior Original Chicken Rice
A complete puppy and junior food with dried chicken 31% and controlled fat at 15%
From£14.99
Lily's Kitchen Puppy Chicken Recipe — 6 x 400g Tins
Sold as a case: 6 x 400g tins. Complete 400G wet puppy chicken recipe with 67% fresh chicken
£22.79
Pooch & Mutt Puppy Bite Size Beef Jerky
Bite-size beef jerky training treats for puppies, scaled by dog size
£3.99
Whimzees Puppy
Softer dental chews for puppies over three months old, grain free and gluten free
£7.99
Burns Grain Free Puppy Duck Potato
Grain-free duck and potato puppy food with a prebiotic, for starting a new litter on a novel protein
From£16.49
Common questions
- Why can't I just feed a St Bernard puppy a standard puppy food?
- Standard puppy foods are calorie-dense to support smaller and medium breeds, and feeding that density to a giant breed can encourage growth faster than developing joints can handle. A large or giant-breed formula controls that growth rate deliberately.
- How long do St Bernards stay on puppy food?
- Longer than most breeds, often into their second year rather than the twelve months typical of smaller dogs, because giant breeds mature more slowly. Check the specific food's guidance and discuss timing with a vet.
- Is calcium level really that important in a giant-breed puppy food?
- Yes, it is one of the clearer markers of a food formulated with controlled growth in mind. Balanced, stated calcium and phosphorus levels help support joint development rather than encouraging growth that outpaces it.
- Do St Bernards have particular joint problems to watch for?
- Like many giant breeds, they can be prone to hip and elbow issues, which is part of why controlled growth as a puppy matters so much. A vet can advise on monitoring joint health as your dog grows.
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.