Kirkland Signature Nature s Domain Cat Food 18 lbs.
Analysis updated August 2026 · How Scout scores
At a glance
Summary
This cat food contains high-quality protein sources like salmon and salmon meal, which are beneficial for feline health. However, the presence of canola oil and the vague 'natural flavor' ingredient detracts from its overall quality. The product is moderately processed, which limits its score despite the inclusion of nutritious ingredients like sweet potatoes and salmon oil.
Key ingredients 10
SalmonVery Good
Salmon is a high-quality source of protein and omega-3 fatty acids. It supports healthy skin and coat in cats. Wild-caught salmon is preferred for its lower contaminant levels.
Risks
Potential risk of mercury and other contaminants if not sourced sustainably.
Benefits
Rich in omega-3 fatty acids which support heart health and reduce inflammation. Provides essential amino acids for muscle maintenance.
Salmon oilVery Good
Salmon oil is a rich source of omega-3 fatty acids, particularly EPA and DHA. It supports cardiovascular health and reduces inflammation. Cold-pressed extraction preserves its beneficial properties.
Benefits
Supports healthy skin and coat, and provides anti-inflammatory benefits.
Salmon mealGood
Salmon meal is a concentrated source of protein and omega-3 fatty acids. It is made by cooking and drying salmon to remove moisture. Provides a dense nutrient profile beneficial for cats.
Risks
May contain higher levels of contaminants if not sourced from quality suppliers.
Benefits
Offers a high protein content that supports muscle development and maintenance. Contains omega-3 fatty acids beneficial for skin and coat health.
Fish mealGood
Fish meal is a protein-rich ingredient derived from whole fish or fish cuttings. It is processed to remove moisture and fat, concentrating the protein content. Provides essential nutrients for cats.
Risks
Potential for contamination with heavy metals or toxins if not sourced responsibly.
Benefits
High in protein and essential fatty acids, supporting overall health and vitality in cats.
Sweet potatoesGood
Sweet potatoes are a nutritious source of carbohydrates and fiber. They provide vitamins and minerals such as vitamin A and potassium. Their natural sweetness can enhance palatability.
Benefits
Rich in dietary fiber which aids in digestion. Provides antioxidants that support immune health.
PotatoesGood
Beneficial ingredient — whole-food or functional value in this product class.
Risks
High glycemic index may affect blood sugar levels if consumed in excess.
Benefits
Provides a source of energy and some essential nutrients like vitamin C and potassium.
PeasGood
Peas are a good source of plant-based protein and fiber. They contain vitamins and minerals such as vitamin K and manganese. Peas can support digestive health and provide energy.
Benefits
Rich in fiber which supports healthy digestion. Provides plant-based protein and essential nutrients.
Pea proteinNeutral
Pea protein is a plant-based protein source used to boost protein content. It is less bioavailable than animal proteins. Often used in combination with other protein sources.
Risks
May not provide a complete amino acid profile compared to animal-based proteins.
Benefits
Contributes to overall protein content, supporting muscle maintenance.
Canola oilNeutral
Canola oil is a source of omega-3 and omega-6 fatty acids. It is used to enhance the fat content and palatability of pet foods. In pet food, it is considered neutral due to its role in providing essential fatty acids.
Benefits
Provides essential fatty acids that support skin and coat health.
Natural flavorBad
Natural flavor is a vague term that can encompass a variety of flavoring agents. It lacks transparency and may include additives or processing aids. Its inclusion is often criticized for not providing clear ingredient information.
Risks
Potential for undisclosed additives or allergens.
Benefits
Enhances palatability, making the food more appealing to pets.
Processing
Processed Foods
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