Human-grade dog foods use animal proteins that are USDA-approved safe for human consumption. This is a big step above the typical feed-grade food used in animal products. Feed-grade proteins do not require USDA inspection. Companies like The Honest Kitchen use high-quality human-grade proteins. However, the term human-grade doesn't guarantee superior protein. It's the quality of the ingredients and the proper balance of nutrients that truly matter. Always scrutinize the ingredient list and nutritional profile.