Natural Balance L.I.D. Limited Ingredient Diets High Protein formulas are free from grains, potatoes, fillers and chicken ingredients. This True L.I.D. diet features one animal protein source and two primary carbohydrate sources, helping you avoid ingredients commonly associated with food sensitivities. This diet is formulated with 32% protein - the highest crude protein level among leading Limited Ingredient dog food brands and real lamb as the #1 ingredient.