Dog food lawsuits in the United States have produced real money for pet owners in recent years, with recent settlements covering salmonella contamination (Mid America Pet Food, $5.5 million), toxic vitamin D levels (Hill’s Pet Nutrition, $12.5 million), and misleading supplement claims (Nutramax Cosequin, $11.5 million). Other active cases target Mars Petcare’s Pedigree brand and Blue Buffalo’s grain-free formulas. Whether you can collect depends on which product you bought, when you bought it, where you live, and what proof you kept.
Mid America Pet Food Salmonella Settlement ($5.5 Million)
The largest recent payout came out of Filardi v. Mid-America Pet Food, LLC, filed in December 2023 in the U.S. District Court for the Southern District of New York after a 2023 salmonella outbreak linked to kibble manufactured at the company’s Mount Pleasant, Texas, plant.1CourtListener. Filardi v. Mid America Pet Food LLC The CDC identified seven human salmonella infections across seven states between January and August 2023, six of them in children one year old or younger.2CDC. Salmonella Outbreak Linked to Pet Food Made by Mid America Pet Food Mid America eventually recalled every brand manufactured at the Texas facility with “best by” dates before October 31, 2024, including Victor Super Premium, Wayne Feeds, Eagle Mountain, and Member’s Mark.3FDA. Mid America Pet Food Expands Voluntary Recall to Include Additional Dog and Cat Food Products
The $5.5 million settlement received final court approval on February 6, 2026.4Justia. Filardi v. Mid-America Pet Food LLC, Order Granting Final Approval Class members who bought covered products between October 31, 2022, and February 29, 2024, could claim the full documented purchase price with receipts, or $20 per bag for up to two bags without. Owners whose pets got sick could recover documented vet bills up to $100,000, or $50 without documentation; the undocumented payout for a dog’s death was $100.5ClassAction.org. $5.5M Mid America Pet Food Settlement Ends Class Action Over Salmonella Contamination
The claim window closed on February 5, 2026, and the settlement is no longer accepting filings.6Mid America Pet Food Settlement. Filardi v. Mid-America Pet Food LLC Settlement A notice of appeal filed on March 4, 2026, has also stayed payments to approved claimants until the appeal is resolved.7ClaimDepot. Mid America Pet Food Settlement
Nutramax Cosequin Supplement Settlement ($11.5 Million) — Still Open
If you live in California and bought Cosequin joint supplements for your dog, you may still be able to file. Lytle v. Nutramax Laboratories, Inc. alleged that advertising and packaging claims about “enhanced joint flexibility, mobility and restored joint health” were false. The $11.5 million settlement received preliminary approval on February 2, 2026, with final approval set for August 13, 2026.8ClassAction.org. $11.5M Nutramax Settlement Ends Litigation Over Allegedly Falsely Advertised Cosequin Canine Supplements
California residents who purchased qualifying Cosequin products between May 2016 and May 2022 can claim $25 per unit, up to $150 total. The filing deadline is July 21, 2026.9Cosequin CA Settlement. Lytle v. Nutramax Laboratories Inc. Settlement Residents of other states are not eligible under this settlement.
Pedigree Vitamin D Lawsuit (Active, No Settlement Yet)
In May 2025, two pet owners filed Attias et al. v. Mars Petcare US, Inc. in the U.S. District Court for the Middle District of Tennessee, alleging that Pedigree Complete Nutrition Roasted Chicken & Vegetable Dog Kibble contained dangerous levels of vitamin D.10Top Class Actions. Mars Petcare Class Action Alleges Pedigree Dog Food Contains Excessive Vitamin D The plaintiffs relied on Consumer Reports testing published in February 2025 that measured 14,282 IU/kg of vitamin D in the kibble, nearly five times the 3,000 IU/kg ceiling set by the Association of American Feed Control Officials.11Consumer Reports. What’s Really in Your Dog’s Food They say their dogs developed vomiting and diarrhea consistent with vitamin D toxicity.
Mars has said its own internal and independent testing of the 2023 batch complied with FDA and AAFCO specifications. The case is active, with no class certification yet.12Pet Food Industry. Mars Faces Lawsuit Over Excessive Vitamin D in Pedigree Dog Food No claims process exists yet, and none will unless the case settles or plaintiffs prevail.
The Hill’s Pet Nutrition Precedent
A prior vitamin D case shows how these resolve. In January 2019, Hill’s Pet Nutrition recalled roughly 675,000 cases of canned dog food after discovering toxic vitamin D levels. The consolidated multidistrict litigation in Kansas settled for $12.5 million, approved in July 2021. After $4 million in attorney fees and administrative costs, remaining funds went to class members who filed claims for either the cost of the contaminated food or veterinary expenses for injured pets.13VIN News Service. Hill’s Settles Class Action Lawsuit Over Vitamin D Recall That claim window has long since closed.
Blue Buffalo Grain-Free Heart Disease Lawsuit
In April 2026, Ryan and Diana Walsh of Lake County, Illinois, filed a proposed class action in the U.S. District Court for the Northern District of Illinois alleging that Blue Buffalo’s grain-free dog food caused their dog’s death from dilated cardiomyopathy (DCM). Their theory: the grain-free formula interfered with absorption of taurine, an amino acid essential for heart function.14Barrington Hills Observer. Lake County Family Files Lawsuit Against Well-Known Dog Food Company General Mills, Blue Buffalo’s parent, has moved to dismiss.15CBS News Chicago. Lake County Family Files Class Action Lawsuit Against Blue Buffalo
The underlying science is contested. The FDA began investigating a potential grain-free/DCM link in 2018 and by November 2022 had received 1,382 canine DCM reports, more than 90% involving grain-free diets and 93% involving peas or lentils. The agency has not declared a causal connection and said it has “no definitive information indicating that the diets are inherently unsafe and need to be removed from the market,” noting that most dogs eating grain-free food never develop DCM.16FDA. Questions and Answers: FDA’s Work on Potential Causes of Non-Hereditary DCM in Dogs FDA laboratory testing found no abnormalities in minerals, metals, or amino acids that distinguished grain-free from grain-containing diets, and the agency has not requested recalls over DCM.17FDA. FDA Investigation Into Potential Link Between Certain Diets and Canine Dilated Cardiomyopathy That weak evidentiary record is why these cases are hard to win.
Why Some Dog Food Lawsuits Fail
Not every claim pays out. In Lucido et al. v. Nestle Purina PetCare Co., filed February 2015 in the Northern District of California, more than 3,000 pet owners alleged Beneful dry dog food contained harmful levels of mycotoxins, lead, and arsenic.18ClassAction.org. Beneful Dog Food Lawsuit Meets Its End Judge Edward Chen granted summary judgment to Purina. The plaintiffs’ expert witness, a veterinary toxicologist, had his testimony ruled inadmissible because he relied on scientific literature rather than independent testing and had not examined the veterinary records of the allegedly affected dogs. The court found no epidemiological evidence linking long-term exposure to mycotoxins at levels below FDA limits to serious health risks in dogs.19Top Class Actions. Purina Defeats Toxic Beneful Dog Food Class Action Lawsuit
A similar fate met Parks v. Ainsworth Pet Nutrition, LLC, filed in 2018, which claimed Rachael Ray Nutrish was falsely marketed as “natural” because testing detected trace glyphosate. A federal judge dismissed the case in 2020, ruling the trace amounts were “negligible,” fell well below FDA limits, and would not influence a reasonable consumer’s purchasing decision.20ClassAction.org. Rachael Ray Nutrish Premium Dog Foods Contain Unnatural Biocide, Class Action Lawsuit Claims
The pattern: contamination cases with documented recalls tend to settle. Cases built on contested scientific theories about ingredients and long-term health effects usually don’t.
Older Resolved Cases
Costco shoppers who bought Kirkland Signature pet food produced at Diamond Pet Foods’ Gaston, South Carolina, plant were covered by an earlier salmonella settlement. After Diamond’s April 2012 recall, Barbara Marciano filed suit in the Eastern District of New York, and the parties agreed to a $2 million settlement in January 2014. Diamond also agreed to new quality control procedures, and class members began receiving checks by October 2015.21Top Class Actions. Costco, Diamond Reach $2M Dog Food Recall Class Action Settlement That window is closed.
A separate prescription pet food case, Moore et al. v. Mars Petcare US, Inc. et al., filed in December 2016 in the Northern District of California, accused major manufacturers and retailers of marketing certain foods as requiring a prescription when no law mandated one. The Ninth Circuit in July 2020 revived the California consumer protection claims while dismissing the federal antitrust claims.22U.S. Court of Appeals for the Ninth Circuit. Moore v. Mars Petcare US Inc., No. 18-15026
What To Do If Your Dog Got Sick
Keep the bag, the receipt, and your vet records. Across every case above, the gap between the undocumented payout and the documented one is the difference between a token refund and real reimbursement. Mid America capped undocumented recovery at $20 per bag and $50 in vet costs; with records, documented veterinary losses were recoverable up to $100,000.
Check the FDA’s recalls and withdrawals page to see whether a product you bought is on it.23FDA. Recalls and Withdrawals Recent entries include chicken dog treats from Elite Treats in February 2026 and dog biscuits from Consumers Supply Distributing in December 2025, each of which could draw its own lawsuit. More than 200 food and consumer product class actions were filed in 2025, with an increasing share aimed at pet food, particularly “free from” and “no artificial preservatives” labeling claims. California and New York remain the dominant jurisdictions.11Consumer Reports. What’s Really in Your Dog’s Food If a new case names a product you bought, a settlement notice will typically direct you to a dedicated claims website with a filing deadline. Miss the deadline and the money is gone.