Natural Balance pet food has released Limited Ingredient Diets High Protein Formulas with 32 percent protein. The formulas contain no grain, potatoes, fillers or chicken ingredients. The primary ingredient in the formula is meat from a single animal protein source. Limited Ingredient Diets High Protein formulas can help sustain energy and provide for healthy digestion and skin in dogs. The formulas are available in beef, turkey or lamb varieties at US pet specialty stores for US$19.99 for 4 lbs., US$42.99 for 12 lbs. and US$64.99 for 24 lbs.