Hill's Prescription Diet d/d Food Sensitivities Wet Dog Food Duck Can review

Ingredients, as declared: Meat and animal derivatives (duck 27%), cereals, oils and fats, minerals, derivatives of vegetable origin. Protein source: Duck. Carbohydrate source: Rice.

Duck is declared at 27% within meat and animal derivatives, and Hill's adds two lines beneath the list that most category style labels leave off: protein source duck, carbohydrate source rice. That is the maker stating the exclusivity in words, which tells you more than the grouped wording above it manages on its own.

Read strictly, though, the list still carries cereals, oils and fats and derivatives of vegetable origin, none of them tied to a species or a plant. The single source lines are an assurance from the maker. The ingredient list does not demonstrate it entry by entry. If your dog is on a trial where one slip undoes weeks of work, that distinction is worth putting to your vet before you start.

The absences on this label tell you as much as the entries do. No second meat is named anywhere, and there is no fish oil in the recipe, which is unusual for a wet food and keeps the animal side reading as duck throughout. The oils and fats entry stays the single unnamed gap in that reading.

Protein converts to 18.8% of dry matter and fat to 17.7%, with the carbohydrate estimate at 57.2% and energy at 105 kcal per 100g, on moisture declared at 74.0%. Keeping protein modest is a design decision in a diet built around one meat, since every gram of it has to come from the same animal. Crude fibre is light at 1.7% of dry matter. Calcium reads 0.81%.

Each trace element carries its own printed dose: zinc at 50.7 mg per kilo, iron at 19.7, manganese at 4.3, copper at 3.3 and iodine at 0.6. The can's guide runs from 98 grams a day for a 1kg dog to 1090 grams at 50kg, with 430 grams at 10kg. How long an exclusion trial should run, and what goes back into the bowl afterwards, is for the vet running it rather than the label.

It is sold as a 370g can.