Diamond Maintenance is an everyday adult dry dog food from Diamond Pet Foods, aimed at budget-minded owners of healthy, moderately active dogs. Diamond also sells a separate premium line called Diamond Naturals, and the two are easy to mix up, so always read the exact product name and label before you buy.
About the Brand
Diamond Pet Foods was founded in 1970 and makes dog and cat food in several US plants, including one in Meta, Missouri. The company markets several lines at different price points, including Diamond Maintenance, Diamond Naturals and grain-free recipes.
Maintenance vs. Diamond Naturals
- Maintenance: a basic adult food for dogs with ordinary needs. Formulas may be built on chicken, chicken by-product meal and grains, depending on the recipe.
- Diamond Naturals: a step up, with named meat first, no corn, wheat or soy in many recipes, and added probiotics, antioxidants and chelated minerals. One chicken and rice recipe lists about 26% minimum protein and 16% minimum fat.
Recipes and guaranteed analyses change, so use the bag as your source of truth. Look at the first ingredients, the protein and fat percentages, and the AAFCO statement that says which life stages the food is formulated for.
What to Check on the Label
- Life stage: “Adult maintenance” foods are for adult dogs, not growing puppies. Puppies need a growth or all-life-stages food.
- First ingredients: look for a named protein like chicken or chicken meal.
- Calories: use the feeding chart as a starting point and adjust by your dog’s body condition.
- Best-by date: check the date and store the bag sealed in a cool, dry place.
Who It Suits
- Healthy adult dogs with normal activity levels
- Owners who want an affordable, widely available kibble
Who May Want Something Else
- Puppies and seniors, who have different needs
- Dogs with food allergies or sensitive stomachs. Talk to your vet first.
- Owners who prefer a higher-protein or grain-free diet. See our Diamond Skin and Coat review and our guide to the best dog foods without corn, wheat or soy.
Safety Record
Diamond Pet Foods has had recalls in the past, including a 2012 salmonella recall. Check the FDA’s current recall list before buying any pet food.
Bottom Line
Diamond Maintenance is a basic, budget-friendly food for healthy adult dogs. If you want more premium ingredients, look at Diamond Naturals. Either way, read the current label and ask your vet if your dog has special needs.
This article is general information, not veterinary advice. Ask your veterinarian about the best diet for your dog.
