Best dog food for a Portuguese Water Dog
A Portuguese Water Dog was bred to work alongside fishermen — swimming, retrieving nets and carrying messages between boats — and that working background shows up as a genuinely active, muscular medium-to-large dog with real energy needs. A food built for a sedentary or toy breed will not keep up with one; a diet with solid protein and fat to support muscle and stamina suits the breed far better.
Feeding a Portuguese Water Dog
A medium breed
An adult Portuguese Water Dog typically weighs 16–27kg, so a healthy Portuguese Water Dog eats a moderate amount 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 medium breed is usually done growing at ~12 months, which is roughly when a puppy food has finished its job. With a typical lifespan of 11–13 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.
A high-energy dog eats like one
Portuguese Water Dogs sit at the top end for energy, and a dog working through an hour and a half of real exercise a day burns through the feeding guide faster than a dog on a short stroll. Feed to the dog's condition, not to the middle of the range on the bag.
How much should a Portuguese Water Dog weigh?
Adult 16–27kgfully grown at ~12 months
| Age | Stage | Typical weight | Of adult size |
|---|---|---|---|
| 8 weeks | Just home | 2.5–4.2 kg | 15% |
| 3 months | Young puppy | 4–6.8 kg | 25% |
| 6 months | Growing fast | 8–13.5 kg | 50% |
| ~12 months | Fully grown | 16–27 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 medium 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 Portuguese Water Dog
Complete foods from our range, matched to a Portuguese Water Dog's size band and what the breed typically needs. Stock levels and delivery dates are live on each product.
Simpsons Dog Sensitive Lamb Potato
A grain-free lamb and potato dry food for dogs with sensitive skin or digestion
From£17.05
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 Grain Free Turkey
Grain-free cold-pressed turkey kibble for dogs, gentle on sensitive stomachs
£69.69
Forthglade British Classics Chicken Family Lunch
Complete Forthglade wet dog food with 75% chicken in a 395G tray
£2.45
Harringtons Puppy Turkey & Rice
Complete turkey puppy food with 30% protein and feeding bands by adult weight
£6.49
Harringtons Just 6 Dry Dog Food Lamb
Grain-free lamb dry dog food in 2KG and 12KG sizes, with size-specific formulas
From£13.99
Burns Puppy Original Lamb & Rice
Complete Burns lamb and rice puppy food in a 2KG bag for up to 12 months
£14.99
An athletic breed with a working background
Portuguese Water Dogs typically weigh somewhere between 16 and 27kg as adults, with a dense, curly or wavy coat that grew out of a job spent largely wet and working. That level of natural energy and muscle tone does not maintain itself on a low-effort feeding routine — this is a breed that generally does better on a food formulated for active or working dogs than on an everyday maintenance recipe.
The flip side is that a dog fed for a working breed but living a far more sedentary life, as many pet Portuguese Water Dogs do, can put on weight quickly if the food and the exercise do not match. Matching the food to your own dog's actual activity level matters more than matching it to the breed's working reputation on paper.
What to look for on the label
A food with a named meat as the first ingredient and a solid protein percentage suits the breed's muscular build, and a formula aimed at active or working dogs is usually a sensible starting point rather than a low-energy or weight-management recipe unless your own dog's lifestyle calls for it.
For a puppy, a large-breed puppy formula that controls the rate of growth is worth looking for, since Portuguese Water Dogs are a medium-to-large breed and grow considerably in their first year. Controlled, steady growth is generally considered kinder on developing joints than the fastest growth a food could technically produce.
Feeding an active adult
How much to feed comes down to your individual dog's activity level far more than a generic figure for the breed — a Portuguese Water Dog swimming and working most days needs meaningfully more than one living a quieter pet life, even at the same weight.
Use the feeding guide on your chosen food as a starting point, then adjust based on your dog's body condition rather than a fixed number, checking in with your vet if you are ever unsure whether your dog is carrying the right amount of weight for their frame.
Common questions
- How much exercise does a Portuguese Water Dog need to match its food?
- This is a genuinely active breed that was bred to work, so most do best with a good amount of daily exercise, ideally including swimming or retrieving where possible. If your dog's lifestyle is quieter than the breed's working reputation suggests, adjust the amount you feed to match, rather than the food type alone.
- Is a large-breed puppy food necessary for a Portuguese Water Dog?
- It is generally a sensible choice, since the breed grows to a meaningful adult size and a large-breed puppy formula is built to support steadier, more controlled growth than an all-breed recipe. Check the packaging of your specific food for its recommended weight range.
- Do Portuguese Water Dogs need a high-protein diet?
- A solid protein content suits their muscular, working-bred physique, though the exact level that suits your individual dog will depend on their age, activity level and any health considerations. A food genuinely formulated for active or working dogs is usually a reasonable starting point.
- Are Portuguese Water Dogs prone to weight gain?
- Any dog can gain weight if fed more than their activity level requires, and a Portuguese Water Dog living a quieter pet life than the breed's working history suggests is no exception. Regularly checking body condition, rather than relying on the bag's feeding guide alone, is the best way to catch it early.
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.