Pet food aisles are built to make you feel guilty. Pictures of wolves, words like ancestral and holistic, and prices that range from a few euros to well over a hundred for a similar-sized bag. Most of that is packaging. The things that actually decide whether a food suits your dog are printed in small type on the back, and they take about two minutes to check.
This guide gives you a repeatable method: confirm the food is complete for your dog's life stage, pick a format you can live with, compare the real cost per day, then run a proper trial. By the end you should have one or two foods that genuinely work for your dog, and a clear sense of when a vet should be part of the decision.
Step one: make sure the food is complete for your dog's life stage
The first filter is the adequacy statement. In the US it usually mentions AAFCO nutrient profiles or feeding trials; in the UK and EU you will see the words complete food or complete feed. A complete food supplies every nutrient your dog needs when fed as the main diet. A complementary food, which includes most toppers, mixers and many treats, does not, and should only make up a small part of the bowl.
Next, check the life stage. Growth foods are made for puppies and pregnant or nursing females. Adult maintenance foods are for grown dogs. All life stages foods must meet the stricter growth standard, which means they can be richer than a sedentary adult needs. For large-breed puppies, look for wording that confirms the food suits dogs expected to be large as adults.
Step two: choose a format you can sustain
Dry, wet, fresh cooked and raw foods can all be complete. The best format is the one that suits your dog, your fridge and your budget month after month. Consistency matters more than chasing whatever is fashionable this year.
| Format | Typical moisture | Strengths | Trade-offs |
|---|---|---|---|
| Dry kibble | 8 to 10 percent | Cheapest per day, easy to store and measure, works in puzzle feeders | Energy dense, so small measuring errors add up; some dogs find it dull |
| Wet (cans, trays, pouches) | 70 to 82 percent | Very palatable, adds water to the diet, softer for older mouths | Costs more per day, needs refrigeration once opened, more packaging |
| Fresh cooked | 60 to 75 percent | Palatable, often suits picky eaters | Expensive, short shelf life, needs freezer and fridge space |
| Raw | 60 to 75 percent | Some dogs do well on it | Strict kitchen hygiene required, bacterial risk for households with young children or vulnerable people; discuss with your vet first |
| Mixed (dry plus wet) | Varies | Balances cost and appeal | Both parts must be counted to avoid overfeeding |
Step three: match the food to the dog in front of you
Age and size come first, but activity and body shape matter just as much. A working collie doing four hours of herding a day needs a food with more energy per cup than a pet collie with two short walks. A dog that gains weight easily does better on a food with a moderate energy density, so the portion still looks reasonable in the bowl.
Kibble size and shape matter too. Toy breeds may struggle with large pieces, and big fast eaters sometimes swallow small kibble whole. If your dog has a known health condition, a history of skin trouble or persistent digestive upset, involve your vet before choosing, because some conditions need a specific diet that only they can recommend.
- Life stage: puppy, adult, or senior needs
- Adult size: toy, small, medium, large, giant
- Activity: couch companion, active family dog, working or sport dog
- Body condition: lean, ideal, or carrying extra weight
- Practicalities: storage space, time, budget, who else feeds the dog
Marketing claims you can safely ignore
Many label words have loose or no legal definitions. Human grade, holistic, premium, natural and ancestral tell you about the brand's image rather than your dog's nutrition. A food can be all of those things and still be too rich for your particular dog.
Grain-free deserves a special mention. Some dogs do need to avoid a specific ingredient, but grains themselves are not a common problem. Regulators in the US have looked into reports of heart disease in dogs eating certain grain-free, legume-heavy diets; the link is still being studied and is not settled. If you are drawn to a grain-free food, ask your vet whether it makes sense for your dog rather than choosing it by default.
Step four: compare the cost per day, not per bag
Bag prices are misleading because foods differ in how many calories they pack into each gram. The number you want is the cost of feeding your dog for one day. You need three figures: bag price, bag weight and the daily feeding amount for your dog's weight.
Take a 20 kg (44 lb) adult dog. Food A costs 54 euros for 12 kg and the chart suggests 250 g a day, so one bag lasts 48 days and costs about 1.13 euros a day. Food B costs 36 euros for 12 kg, but it is less energy dense and the chart suggests 295 g a day, so the bag lasts about 41 days at roughly 0.88 euros a day. Food B is still cheaper, though not by the 33 percent the shelf price suggests. Run the same sum on any food you are considering and the real gap often shrinks or flips.
Run a six-week trial and judge it honestly
Switch to the new food gradually over 7 to 10 days, then give it at least six weeks before deciding. Coat changes take a month or more to show, and early stools can still be settling. Take a photo of your dog from above and from the side on day one, note the weight, and repeat at week six.
A food that works produces firm, easy-to-pick-up stools, steady weight at the same portion, a coat that looks good, normal energy and a dog that eats willingly without frantic begging. If you see ongoing itching, repeated loose stools, vomiting, or weight loss at the recommended portion, stop the trial and talk to your vet instead of cycling through more bags.
Checklist
- Confirm the label says complete, not complementary
- Match the life stage, including large-breed growth wording for big puppies
- Pick a format you can afford and store every month
- Work out cost per day for each shortlisted food
- Transition over 7 to 10 days, then trial for six weeks
- Photograph and weigh your dog on day one and week six
Questions
Is more expensive dog food always better?
No. Price often reflects ingredients with consumer appeal, packaging and marketing rather than better nutrition for your dog. A mid-priced complete food that keeps your dog at a healthy weight with good stools and coat is doing its job. Judge a food by the adequacy statement, how your dog does on a proper trial, and cost per day, not by the shelf price.
Should I rotate between different foods to add variety?
Dogs do not need variety the way people enjoy it, and many dogs do best on one consistent diet. Some owners rotate between two or three complete foods with similar formats to keep a picky eater interested. If you do, transition each change over several days and keep an eye on stools. Dogs with sensitive digestion usually do better with fewer changes.
How do I choose a food for a dog with a sensitive stomach?
Start with your vet, because loose stools, vomiting or gas can have many causes, and changing food repeatedly can make it harder to find the real one. Once your vet has ruled out other problems, they may suggest a specific diet and a structured trial. Avoid switching brands every week, and keep treats simple during any trial so you can judge the food fairly.
Can I mix wet and dry food?
Yes, as long as the combined calories match your dog's needs. Work out what share of the day's energy each will provide, for example three quarters from dry and one quarter from wet, and reduce each portion accordingly. The feeding guide on each pack assumes it is the only food, so feeding the full amount of both will lead to weight gain.
