Commercial Dog Food Investigation Raises New Safety Concerns

A new investigation by the Clean Label Project found “alarming” levels of heavy metals, plastic-related chemicals, and acrylamide in many popular commercial dog foods, particularly dry kibble. Testing of 79 best-selling products revealed that dog foods contained three to 13 times more heavy metals than foods tested for humans, with lead, mercury, arsenic, and cadmium detected at concerning levels. Dry dog food showed the highest contamination, while fresh and frozen foods tested lowest overall. Researchers also identified acrylamide — a compound formed during high-heat cooking and linked to cancer in animal studies — at levels far exceeding those found in human foods.

What Pet Owners Should Know

Experts stress there is still limited long-term research on how chronic exposure to these contaminants affects dogs, though heavy metals are known to accumulate in the liver and kidneys and have been linked to canine cancer. The Clean Label Project recommends rotating dog food brands to reduce prolonged exposure to any single source, and considering fresh or frozen options when feasible. Industry groups say they are reviewing the findings, while scientists note that more transparency and routine testing could improve consumer confidence — though that may also increase costs. For now, veterinarians advise awareness rather than panic, and encourage pet owners to discuss diet choices and rotation strategies with their vet. Read full coverage at CNN.com.