This is a super premium quality food that can be fed to any dog of any age with great results! It is especially an excellent choice for the dog owner desiring to feed a High Protein / Low Carbohydrate food for dogs with moderate to high levels of daily activity. Formulated with Pre-Biotics, Pro-Biotics, Complex Trace Minerals and Selenium Yeast. Nutra Pro is simply one of the best nutritional values on the market in the United States. 40 Lbs.