Hog food is a type of food that is specifically designed for hogs. The most common types of hog food are SLOP, MAST, and SLOPS. SLOP is a type of wet feed made from grains, vegetables, and other ingredients. MAST is a type of dry feed made from grains, nuts, and other ingredients. SLOPS are a type of wet feed made from grains, vegetables, and other ingredients that have been cooked. All three types of hog food provide hogs with the necessary nutrients to stay healthy and grow.