Are cheap pet foods feeding dogs and cats a daily dose of PFAS?
Yes. Most tested dog and cat foods carry detectable PFAS, and the bag itself adds more.
What's actually in it
PFAS get into pet food through the meat, fish, and vegetables used as ingredients. Then more PFAS come from the bag itself. Many kibble bags use a grease-resistant inner liner that contains PFAS, which migrate into the food during storage.
Cats are extra sensitive because they live indoors all day, eat the same brand for years, and groom themselves, which doubles their dose.
What the research says
A 2026 study in Environ Pollut tested commercial pet foods for PFAS and found widespread contamination. Several brands had levels that mattered for daily feeding. Fish-based foods had the most. The bag liner added a second source.
The dose for a small cat eating one brand for years was high enough to hit the kind of body burden linked to thyroid and liver effects in pets.
For your pet, switch to brands that publish third-party PFAS testing or that pack in aluminum cans instead of grease-lined bags. Fresh-cooked diets cut the bag exposure even more. Store dry food in a glass or steel container, not the original bag.
The research at a glance
| Study | Journal | Year |
|---|---|---|
| Widespread PFAS contamination in pet food: Dietary sources and health risks to companion animals. | Environ Pollut | 2026 |
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