Large Breed Adult Lamb Meal & Rice Formula Dry Dog Food
Verified Jun 14, 2026
This is a dry kibble formulated specifically for large-breed adult dogs, using lamb meal as the primary protein source along with several whole grains like brown rice, barley, and oatmeal. It offers moderate protein and fat levels with added glucosamine, chondroitin, omega-3 and omega-6 fatty acids, and probiotics for overall support. The recipe is designed to meet AAFCO maintenance standards for adult dogs, not for puppies or growth.
Overall, this is a solid, well-balanced option for healthy large-breed adult dogs who do well on a grain-inclusive lamb-based diet. The protein and fat levels are moderate, which suits many large dogs that don’t need a very high-calorie food, and the added joint nutrients, omega fatty acids, and probiotics are nice extras. It’s best suited for adult dogs at maintenance (not for growing large-breed puppies or highly active working dogs).
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
- Lamb meal as the first ingredient provides a concentrated, high-quality animal protein source appropriate for adult maintenance.
- Grain-inclusive formula using brown rice, barley, oatmeal, and sorghum, which can be gentle on many dogs’ digestion and avoids the legume-heavy pattern linked with some heart concerns.
- Includes glucosamine and chondroitin, which can be helpful support nutrients for large-breed dogs’ joints, along with added L-carnitine and taurine.
- Added omega-6 and omega-3 fatty acids plus probiotics and various fruits and vegetables provide additional skin, coat, and digestive support nutrients beyond the basic requirements.
Considerations
- Contains egg and chicken fat, so it is not suitable for dogs with known egg or chicken fat allergies, and lamb itself can be an allergen for some dogs with food sensitivities.
- Formulated for adult maintenance only, so it is not appropriate as the sole diet for puppies, especially large-breed puppies that have different calcium and energy needs.
- Protein (22% min) and fat (12% min) are on the moderate side, which is good for many large dogs but may be a bit low in energy density for very active or working dogs that burn a lot of calories.
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
Lamb
Lamb is commonly used in dog and cat foods as a high-quality animal protein that supplies essential amino acids, iron and B vitamins and is often chosen for its palatability or as a “novel” protein in elimination diets. It can be higher in fat and calories than some other meats and may still cause allergic reactions in sensitive animals, so owners of overweight pets or those with food sensitivities should consult a veterinarian and use proper handling/cooking practices if feeding raw or homemade lamb.
02
Brown Rice
Brown rice is a whole-grain carbohydrate and fiber ingredient commonly used in dog and cat foods to provide digestible energy, dietary fiber, and modest amounts of B‑vitamins and minerals; it typically offers more nutrients and fiber than white rice. It’s generally well tolerated and can help with sensitive stomachs, but because it is high in carbohydrates (not a primary protein source) and can contain trace inorganic arsenic depending on sourcing, it should be included in balanced formulations and monitored in overweight or diabetic pets.
03
Barley
Barley is a cereal grain used in pet foods primarily as a digestible carbohydrate and source of dietary fiber (including soluble beta‑glucans), along with modest amounts of B vitamins and minerals. It can support healthy digestion, help moderate post‑meal blood sugar and aid weight management in dogs, but provides limited protein for obligate carnivores like cats, must be cooked/processed for good digestibility, and may be unsuitable for pets with grain sensitivities or calorie‑restricted diets.
04
Oatmeal
Oatmeal is used in pet foods as a digestible carbohydrate and source of soluble fiber (notably beta‑glucans), serving as a gentle filler or binder that can support healthy digestion and steady energy release. It provides B vitamins and minerals, is generally well tolerated by dogs and many cats when cooked and plain, but should be free of added sugars or flavorings and used cautiously for overweight or diabetic pets or animals with individual grain sensitivities.
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
Diamond Naturals is a mid-range premium brand featuring whole-food ingredients and added probiotics for digestive health. It provides grain-inclusive and grain-free formulas designed for balanced nutrition and holistic wellness.
Visit Diamond NaturalsManufacturer
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 Naturals Large Breed Adult Lamb Meal & Rice Formula 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 Naturals ever been recalled?
We have no recalls on record for Diamond Naturals. 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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