Kirkland Signature Mature Formula Chicken Rice and Egg Dog Food 40 lb.

Common questions

Is Kirkland Signature Mature Formula Chicken Rice and Egg Dog Food 40 lb. healthy?

Kirkland Signature Mature Formula Chicken Rice and Egg Dog Food 40 lb. scores 70/100 on Scout's independent analysis of ingredients, additives, and lab results — a fair-to-good score — solid, with tradeoffs. This dog food contains high-quality protein sources like chicken, chicken meal, and fish meal, which provide essential amino acids and omega-3 fatty acids.

How processed is Kirkland Signature Mature Formula Chicken Rice and Egg Dog Food 40 lb.?

Kirkland Signature Mature Formula Chicken Rice and Egg Dog Food 40 lb. is NOVA Group 3: Processed Foods.

Which ingredients drive Kirkland Signature Mature Formula Chicken Rice and Egg Dog Food 40 lb.'s score?

In Scout's ingredient-by-ingredient analysis, Chicken, Chicken Meal, Whole Grain Brown Rice count in its favor. The full breakdown, with why each one matters, is in the Key ingredients section on this page.

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Kirkland Signature Mature Formula Chicken Rice and Egg Dog Food 40 lb.

70 Good

Analysis updated August 2026 · How Scout scores

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At a glance

Beneficial ingredients 10
Harmful ingredients 0
Category Pet Food
Summary

This dog food contains high-quality protein sources like chicken, chicken meal, and fish meal, which provide essential amino acids and omega-3 fatty acids. The inclusion of whole grains such as brown rice and barley adds fiber and energy, supporting digestive health. Despite being processed, the product maintains a clean ingredient list with beneficial components like flaxseed and dried whole egg, contributing to overall nutritional value.

Key ingredients 16

Chicken
Very Good

Chicken is a high-quality source of protein, essential for muscle maintenance and repair. It provides a rich amino acid profile beneficial for dogs. The use of whole chicken indicates minimal processing.

Benefits

Provides essential amino acids and is a lean source of protein, supporting muscle health and overall vitality in dogs.

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Flaxseed
Very Good

Flaxseed is a source of omega-3 fatty acids and dietary fiber. It is minimally processed, retaining its natural nutrients. This ingredient supports skin health and provides anti-inflammatory benefits.

Benefits

Rich in omega-3 fatty acids and fiber, supporting skin health and providing anti-inflammatory benefits.

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Chicken Meal
Good

Chicken meal is a concentrated source of protein, offering more protein per gram than fresh chicken. It is made by rendering chicken to remove moisture and fat. This process retains essential nutrients beneficial for dogs.

Benefits

Rich in protein and essential nutrients, supporting muscle development and maintenance in dogs.

Whole Grain Brown Rice
Good

Whole grain brown rice is a complex carbohydrate that provides energy and fiber. It is minimally processed, retaining its nutrient-rich bran and germ. This ingredient supports digestive health and provides sustained energy.

Benefits

Provides dietary fiber and essential nutrients, supporting digestive health and providing a steady energy source.

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Barley
Good

Barley is a whole grain that offers fiber and essential nutrients. It is minimally processed, retaining its natural vitamins and minerals. This ingredient supports digestive health and provides a source of energy.

Benefits

Rich in dietary fiber and nutrients, supporting digestive health and providing energy.

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Chicken Fat
Good

Chicken fat is a source of essential fatty acids, important for skin and coat health. It is rendered from chicken, providing a natural source of energy. This ingredient enhances palatability and supports overall health.

Benefits

Provides essential fatty acids that support skin and coat health, and enhances the flavor of the food.

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Dried Whole Egg
Good

Dried whole egg is a complete protein source, offering all essential amino acids. It is minimally processed, retaining its nutritional value. This ingredient supports muscle health and provides essential nutrients.

Benefits

Rich in high-quality protein and essential nutrients, supporting muscle health and overall nutrition.

Fish Meal
Good

Fish meal is a concentrated source of protein and omega-3 fatty acids. It is made by cooking and drying fish, preserving its nutritional content. This ingredient supports joint health and provides essential nutrients.

Benefits

Provides high-quality protein and omega-3 fatty acids, supporting joint health and overall well-being.

Potatoes
Good

Beneficial ingredient — whole-food or functional value in this product class.

Benefits

Provides carbohydrates for energy but lacks significant protein or fat content.

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Zinc
Good

Beneficial ingredient — whole-food or functional value in this product class.

Benefits

Essential for immune function and skin health, contributing to overall well-being.

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Dried Beet Pulp
Neutral

Dried beet pulp is a source of dietary fiber, supporting digestive health. It is a byproduct of sugar beet processing, providing fermentable fiber. This ingredient aids in maintaining healthy digestion.

Benefits

Provides fermentable fiber that supports digestive health and regularity.

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Glucosamine
Neutral

Glucosamine is a compound that supports joint health. It is often added to pet foods to aid in joint maintenance. This ingredient is beneficial for older dogs or those with joint issues.

Benefits

Supports joint health and may aid in reducing joint pain or stiffness.

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Chondroitin
Neutral

Chondroitin is a compound that supports cartilage health. It is commonly used in pet foods to promote joint health. This ingredient is beneficial for maintaining joint function in dogs.

Benefits

Supports cartilage health and may aid in maintaining joint function.

Vitamin E
Neutral

Vitamin E is an antioxidant that supports immune function. It is added to pet foods to enhance nutritional value. This ingredient helps protect cells from oxidative damage.

Benefits

Acts as an antioxidant, supporting immune function and protecting cells from damage.

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Selenium
Neutral

Selenium is a trace mineral important for immune function and antioxidant defense. It is included in pet foods to ensure adequate intake. This ingredient supports overall health and well-being.

Benefits

Supports immune function and acts as an antioxidant, contributing to overall health.

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Active9 Probiotics
Neutral

Active9 Probiotics are beneficial bacteria that support gut health. They are added to pet foods to promote digestive balance. This ingredient aids in maintaining a healthy gut microbiome.

Benefits

Supports gut health and promotes digestive balance, contributing to overall well-being.

Processing

Group 3 · Processed

Processed Foods

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