If you decide to feed your dog a mixed diet, there are still some benefits that you can expect.
They'll be getting a wider variety of nutrients than if they were eating a strictly carnivorous diet. It can be especially beneficial if you're feeding them a portion of high-quality, balanced dog food that contains all the nutrients they need. Mixed diets tend to be more palatable for dogs, so they may be more likely to eat their food if it's a mix of meat and carbs.