Heavy Metals Detected in Popular Cat Foods

The Clean Label Project found lead, cadmium, and arsenic in nearly all tested cat food products.

Updated on Oct. 2, 2026 in Cats

Bold vector editorial illustration featuring a steel pet food bowl with kibble and a stylized atomic symbol above it. — A new investigation by the Clean Label Project detected traces of heavy metals, including lead and arsenic, in most major cat food brands. AI Illustration. Upload story photo >

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Do you trust the safety of the cat food brands you currently purchase?

A new investigation by the Clean Label Project detected heavy metals in the vast majority of analyzed cat food brands. The study screened top-selling wet, dry, air-dried, and freeze-dried products for over 100 contaminants.

Why it matters

The findings shed light on the presence of common environmental toxins in pet nutrition. Understanding these results helps pet owners better evaluate the quality and safety of the food they provide to their animals.

Researchers screened 120 contaminants across popular pet food types, finding that dry food contains three times the amount of lead found in wet or air-dried products. Additionally, fish-based items showed higher concentrations of mercury.

The players

Clean Label Project

The Clean Label Project is a non-profit organization that utilizes laboratory testing to provide data on product ingredients and environmental contaminants.

The details

The Clean Label Project evaluated a wide range of cat food formats to identify the prevalence of substances like lead, mercury, and arsenic. The investigation confirmed that these heavy metals were widespread across the brands tested, appearing in nearly every product category.

The findings from the Clean Label Project were published on October 2, 2026.

Culture Shift

This study follows a pattern set by the Clean Label Project's food contaminant disclosure standards, which prioritize public awareness of substances in consumer goods. It reflects a broader movement toward radical transparency in the pet product industry and higher standards for ingredient purity.

Pet owners may choose to review the ingredient labels of their current cat food brands or consult with veterinarians regarding dietary options. These findings provide owners with additional data to consider when making purchasing decisions for their pets.

The takeaway

Pet owners should discuss dietary concerns and potential food rotation strategies with their local veterinarian. Monitoring changes in product sourcing and choosing diverse food types may help mitigate exposure to environmental contaminants.