August 25, 2026
Costco has told a Washington federal court that the very sources cited in a recent proposed class action undercut claims that grain-free dog food contributes to canine heart disease and that the U.S. Food and Drug Administration hasn't found such a connection or issued a recall.
June 24, 2026
Costco deceptively advertises its Nature's Domain grain-free dog food as a healthy and safe option despite a growing body of research showing that grain-free diets heighten the risk of canine heart disease, a California consumer alleged in a new proposed class action filed in Seattle federal court Tuesday.