The body needs minerals to function at maximum capacity. Unfortunately, the body does not produce minerals. Therefore they must be assimilated from Royal Canin food. Like vitamins, minerals are essential in a dog's diet. They maintain bone health, help transport oxygen from the blood to the brain, and balance the body's fluid levels. As for carbohydrates, because the dog's body can synthesize glucose from fats and proteins, carbohydrates are not essential for him. However, they make the whole body work. Therefore, experts recommend that the dog food you buy also includes carbohydrates. They can be taken from fruits, vegetables, cereals, and wet food.