Grain-free diets have been popular for dogs with specific grain allergies or sensitivities. However, recent studies and warnings from the FDA have highlighted a potential link between grain-free diets high in legumes and potatoes and an increased risk of dilated cardiomyopathy (DCM) in dogs, including Dobermans. While not all dogs on grain-free diets will develop DCM, and genetics play a significant role, it's important to carefully consider the choice of a grain-free diet. Keep in mind that Dobermans are prone to DCM. If you're considering a grain-free diet for your Doberman due to allergies or other health concerns, consult with a veterinarian. They can provide guidance on a nutritionally balanced diet that minimizes health risks while meeting your dog's dietary needs.