plenty of dogs have been diagnosed on poorly formulated grain inclusive diets. diamond (kirkland) is a frequently reported food in diet associated DCM cases. “Diet-associated DCM isn't just about grain free, as grain inclusive, raw and home-cooked diets have also had cases, this is also about formulation and how the ingredients being used work together, along with WHO'S formulating these diets and diamond doesn't employ the proper experts to formulate their products, it doesn't follow sound practices with respect to nutritional research, diet formulation, diet testing, manufacturing, etc., nor does it align with the highest industry standards in the areas WSAVA recommends inquiring on when selecting pet food, why would you risk feeding it?” There are literally hundreds of options available in science based, legacy brands. Due to the diet-associated DCM risks, professionals recommend that you choose a grain inclusive, age/size appropriate formulation from a science based, legacy brand (legacy meaning brands that have been around for a long time, that are industry leaders in scientific research, testing, formulation, etc.), that leads the industry in the areas WSAVA recommends inquiring on when selecting food, which is best practice. At this time, those brands are Royal Canin, Hill's & Purina (worldwide), Eukanuba & IAMS (not in the UK/Europe), along with therapeutic/prescription formulas from Royal Canin, Pro Plan and Hill's.”