Tag: Costco pet food quality

• Pet Nutritionist Reviews: Costco Dog Food

  

  Costco’s Kirkland Signature dog food provides affordable yet balanced nutrition, produced by Diamond Pet Foods. Formulated with named animal proteins and supplemented with vitamins, the food generally meets AAFCO standards. While it offers strong value at a competitive price, transparency on nutrient profiles could improve. Overall, it’s suitable for healthy dogs.

  Andrea Geiger, MSc

  March 10, 2026

  Dog Nutrition

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