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Purina pro plan savor, I stick to the ones that follow the requirements set by AAFCO, which has a minimum requirement of nutrients required by the animal, which was done through scientific testing.

Interesting thing about the grain free diets and DCM is that there are in general 2 types of heart disease a dog can get, dilated cardiomyopathy (generally seen in large breed dogs), and chronic valve disease (normally seen in small breed dogs). With the increase in DCM related to grain free diets, it’s been noticed in small breed dogs, which historically dont get it.

Jon_slider does make a good point about sample size though, a study on dogs that has 30 participants would be considered a pretty decent sized one, the resources to do giant multi thousand participant studies just aren’t there. One last bit of info is that while grain free (and boutique diets) are likely associated with DCM, no aberrant cases have been noted in grain free diets from brands like purina, hills, or royal canin, which are the companies that follow the AAFCO recommendations.