Grain-free dog food is exactly what it sounds like food that does not contain grains such as wheat, corn, rice, barley, or oats. Instead of these ingredients, manufacturers often use alternatives like sweet potatoes, lentils, peas, or chickpeas to provide carbohydrates. Grain-free diets have gained popularity among pet owners who believe they are more natural or easier for dogs to dig... https://petitpoodle.com/blogs/news/understanding-grain-free-dog-food-pros-cons-and-myths