FDA is investigating a potential dietary link between canine dilated cardiomyopathy (DCM) and dogs eating certain pet foods containing legumes like peas or lentils, other legume seeds, or potatoes as main ingredients. We began investigating after FDA‘s Center for Veterinary Medicine (CVM) received a number of reports of DCM in dogs eating these diets. DCM itself is not considered rare in dogs, but these reports are unusual because many of the reported cases occurred in breeds of dogs not typically genetically prone to the disease and were reported to have been fed the same type of diet (labeled as “grain-free”).