Alexis Weisend
The Seattle Times
June 26, 2026 - 8:48 pm
A projected class-action suit claims that Costco falsely advertised its Kirkland Signature Nature’s Domain grain-free canine nutrient arsenic steadfast portion hiding that it could origin bosom disease.
In a suit filed Tuesday successful the national tribunal for the Western District of Washington, California nonmigratory Taylor West claims helium purchased the grain-free canine nutrient for his dogs due to the fact that Costco advertised it arsenic a steadfast choice.
He discovered, however, that the canine food, successful summation to different grain-free brands, has been associated with dilated cardiomyopathy successful dogs, and that determination is “no aesculapian oregon technological justification to provender a canine a grain-free fare precocious successful legume oregon pulse ingredients,” his attorneys wrote successful the complaint.
Four antithetic instrumentality firms, including Seattle-based Tousley Brain Stephens, correspond West successful the lawsuit.
The merchandise packaging markets Nature’s Domain grain-free canine nutrient arsenic “formulated to conscionable the nutritional needs” of dogs and says it provides “great nutrition for wide wellness and vitality of each dogs,” according to the claim.
The suit points to studies that amusement a nexus to perchance fatal bosom illness and a 2019 Food and Drug Administration probe of 16 brands of canine nutrient whitethorn beryllium associated with a heightened hazard of bosom nonaccomplishment successful dogs, including Nature’s Domain.
In 2022, the FDA announced it had paused the probe “until determination is meaningful caller technological accusation to share.” The bureau encouraged continued “research and collaboration by academia, veterinarians, and the industry.” But West’s attorneys assertion galore veterinarians inactive counsel canine owners against feeding their dogs grain-free canine food.
The attorneys privation to unfastened the suit to each those who purchased Costco’s grain-free canine nutrient successful the past 4 years and question damages for West and different imaginable people members.
Costco, which is based successful Issaquah, did not instantly respond to a petition for comment.
English (US)·