This is an archived article and the information in the article may be outdated. Please look at the time stamp on the story to see when it was last updated.

WASHINGTON — The Food and Drug Administration is warning dog owners that some grain-free pet foods could be linked to heart disease in dogs.

That’s confusing to some families who were told to keep their dogs on grain-free diets.

The FDA says foods with peas, lentils, legumes or potatoes listed as main ingredients could be linked to dilated cardiomyopathy or DCM.

Some reported symptoms include decreased energy, cough, difficulty breathing and episodes of collapse.

No specific brands are named in the warning, but pet owners can check the ingredient lists on food.

This is already an issue customers are asking about at Mouthfuls Pet Supply store in Denver.

The co-owner, Deb Dempsey, has some advice.

“We suggest rotation,” she said. “Rotate between brands. Rotate between proteins, add in real food.”

She said one concern is a deficiency in an amino acid called taurine.

To make up for that, pet parents can add sardines or goat milk to the dog’s diet.