Natural Balance L.I.D. Limited Ingredient Diets High Protein formulas are free from grains, potatoes, filler and chicken ingredients. This True L.I.D. features one animal protein source and two primary carbohydrate sources, helping avoid ingredients commonly associated with food sensitivities. This diet is formulated with 32 percent protein, the highest crude protein level among leading limited ingredient dog food brands. It’s available in Beef, Turkey and Lamb varieties.