Arrrrrgh. I really vacillated about changing from Wellness Lamb and Barley, which is NOT grain-free, but does have peas listed as number 7 on their list of ingredients. My dogs have done very well on that food for years, and NO recalls. Their Salmon recipe had peas as #3 and WAS implicated in DCM in a study (again - I threw away the papers my vet gave me, so don't remember whose study, but think it was WSAVA). But in the end I chose to switch to Purina Proplan, after finding a very similar recipe. The nugget of uncertainty was bothering me, so I switched as a precaution. I hope this can be studied more definitively so that the smaller companies do not go out of business. But I do see the importance of having an actual veterinary nutritionist be in charge of formulating the food instead of a layman. This is really an upsetting issue on many levels. Thank you Dr. Mac for weighing in. The more info the better and I appreciate your taking the time to help us with this dilemma.