Diamond Maintenance Dry Dog Food
Verified Jun 15, 2026
This is a moderate-calorie dry food designed for maintenance of adult dogs with typical activity levels. It uses chicken by-product meal as the primary protein source, alongside several grains for energy, and includes added omega fatty acids, glucosamine, and probiotics. The formula is complete and balanced for adult maintenance according to AAFCO nutrient profiles.
This food provides a solid, balanced option for healthy adult dogs who don’t need a very high-protein or high-fat diet. Chicken by-product meal supplies concentrated animal protein, and the inclusion of omega fatty acids, glucosamine, and multiple probiotic strains is a plus. It’s more of a straightforward maintenance formula than a performance or specialized diet, so it’s best suited to moderately active adult dogs at a healthy weight.
The KibbleLab Score (1–10) is assessed from publicly available product data. Our evaluation is science-based, not marketing-based.
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At a Glance
KibbleLab Review
Strengths
- Complete and balanced for adult maintenance according to AAFCO nutrient profiles, with reasonable protein (22%) and fat (12%) levels for many average adult dogs.
- Chicken by-product meal as the first ingredient provides a nutrient-dense animal protein source, and egg product adds additional high-quality protein.
- Includes added omega-6 and omega-3 fatty acids, which can help support skin and coat health, plus glucosamine for joint support.
- Multiple probiotic strains (Lactobacillus, Bifidobacterium, Enterococcus, Bacillus) are added, which may help support digestive and immune health.
Considerations
- Contains chicken by-product meal and egg, which are common allergens; dogs with chicken or egg allergies would need a different protein source.
- Uses several cereal grains (wheat flour, corn, sorghum, rice bran) as major ingredients, which is fine for most dogs but may not suit those needing grain-free or very low-carbohydrate diets.
- Formulated for maintenance only, so it is not appropriate for growing puppies, pregnant or nursing females, or very active working dogs that often need higher nutrient densities.
Full Ingredient List
Ingredients and analysis reflect manufacturer data at the time of our last update and can change without notice. Always check the actual product packaging before feeding.
Ingredient filtering helps identify compatible options but is not a substitute for a veterinary elimination diet.
Top 5 Ingredients Explained
01
Chicken By-Product
Chicken by-product is a common protein ingredient in pet foods made from edible parts of the bird not typically consumed by people—such as organs (liver, heart), necks and other tissues—and is used to add protein, flavor and nutrient density. It can provide concentrated protein, essential amino acids, B vitamins and minerals (and may contribute taurine when organ meats are included), but composition and quality vary by source, so pet parents concerned about sourcing, higher ash/fat content or chicken allergies should check the manufacturer’s labeling and quality standards.
02
Wheat Flour
Wheat flour is commonly used in pet foods as a carbohydrate source, binder and extender that provides digestible energy, some protein (including gluten), and small amounts of fiber and B‑vitamins when enriched. While generally safe and economical for many dogs, it is not a required ingredient for obligate carnivores like cats, can contribute to excess calories or a high glycemic load, and can trigger food allergies or gluten sensitivity in susceptible pets, so animals with known wheat sensitivities or weight concerns may benefit from wheat‑free formulations.
03
Whole Grain Corn
Whole grain corn is commonly used as a carbohydrate and energy source in pet foods, providing digestible starch, dietary fiber, some protein, and B vitamins and minerals while retaining more nutrients than refined corn. It is generally economical and well-tolerated by most dogs and many cats, but because cats are obligate carnivores animal-based proteins are nutritionally more important, and pets with grain sensitivities, certain metabolic conditions, or requirements for low-carbohydrate diets may need alternatives; proper sourcing and processing also reduce mycotoxin risk and improve digestibility.
04
Rice Bran
Rice bran, the nutrient-rich outer layer of the rice kernel, is used in pet foods as a source of dietary fiber, energy-dense fats, and micronutrients (B vitamins, vitamin E and trace minerals) and can help improve palatability and stool quality. It can be a useful ingredient for dogs (and to a lesser extent cats) but is high in oil and can go rancid unless stabilized, contains phytates that may affect mineral absorption, and can concentrate contaminants like inorganic arsenic, so it should be sourced and processed carefully and not be relied on as a primary protein for obligate carnivores.
05
Grain Sorghum
Grain sorghum is a gluten-free cereal grain used in pet foods primarily as a carbohydrate and fiber source that also contributes modest plant protein, B vitamins, and minerals, often serving as an alternative to corn or wheat. It supplies energy and dietary fiber for dogs and cats but is relatively low in certain essential amino acids (like lysine), and some tannin-containing varieties can reduce palatability and nutrient digestibility—processing and balanced formulation mitigate these issues, and sourcing should guard against mycotoxin contamination.
Nutritional Breakdown
How to read As Fed versus Dry Matter
As fed shows the numbers straight off the label, water included. Dry matter removes the water so you can compare a wet food and a dry food fairly.What is calorie density
How many calories the food packs per unit. Denser foods mean smaller portions for the same calories.Product Details & Brand
Product Specs
AAFCO Nutritional Adequacy
What is AAFCO
Association of American Feed Control Officials. It sets the nutritional
adequacy standards US pet foods are measured against.
What is AAFCO
Association of American Feed Control Officials. It sets the nutritional adequacy standards US pet foods are measured against.Brand
The core Diamond brand offers value-oriented dog and cat food formulations designed to balance affordability with reliable quality. It appeals to pet owners seeking trusted nutrition at budget-conscious price points.
Visit DiamondManufacturer
Diamond Pet Foods maintains a rigorous quality assurance program that includes in-house testing for mycotoxins, pathogens, and nutritional analysis. The company adheres to FDA, AAFCO, and HACCP standards, employing extrusion and cooking processes designed to ensure product safety.
Manufacturing details are compiled from public sources and not independently verified; they may not reflect contract manufacturing or co-packing.
Recall History
Diamond Diamond Maintenance Dry Dog Food has no recalls since 2014.
Source: FDA Pet Food Recall Database · Monitored daily
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Frequently Asked Questions
Has Diamond ever been recalled?
We have no recalls on record for Diamond. We monitor the FDA Pet Food Recall Database daily.
How does KibbleLab rate foods?
Our scores are based on ingredient composition, nutritional profile, AAFCO compliance, and health considerations. We don't penalize by-products, grains, or synthetic preservatives. Brands cannot pay for higher scores.
Is KibbleLab a substitute for veterinary advice?
No. KibbleLab provides data-driven food analysis, not medical advice. Always consult your veterinarian before making dietary changes, especially for pets with health conditions.
KibbleLab provides informational content only. This is not veterinary advice. Always consult a qualified veterinarian before changing your pet's diet.
KibbleLab may earn affiliate commissions through product links. No one can pay for a higher score, or to change what we recommend for your pet.
Product data sourced from manufacturer websites, AAFCO statements, and FDA recall database. Last verified dates reflect our most recent data check.
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