Peanut butter is a great source of added protein and fiber for your pup and a tablespoon on their dry food is a surefire way to get them to eat it! Make sure to choose an all-natural peanut butter that does not contain the ingredient xylitol as it can be dangerous for pets.
Yogurt. This provides a great source of protein for dogs (especially Greek yogurt). Make sure to avoid the brands high in sugar and preservatives.
Lean proteins (like chicken, turkey and beef). Most of these meats are found in your pet’s dry and wet foods anyway and are filled with healthy fats and proteins dogs need to maintain a healthy weight and energy level. Just be sure to feed them lean proteins that have not been cooked with strange vegetables, oils or wines.
Salmon. The omega-3 fatty acids are good for your dog’s coat and skin health, and provide him with a healthy source of protein.