That means their menu changes should be approached carefully and introduced gradually, carefully monitoring the dog's physical and emotional reactions. Constantly monitor the pet's health and do not neglect signs such as weight loss or gain weight, as these are signs of metabolic problems or severe conditions and are reasons for changing the dog's daily diet. Many nutritionally balanced foods for adult dogs are formulated for their specific needs. Thus, there are several options for your dog's diet. Race, height, age, lifestyle, and health matter a lot.