Simpsons Premium Adult Mixed Meat + Fish 80/20 Dog Food is a grain free recipe that has been formulated for all breeds of Adult and Senior dogs. The recipe uses human grade meat and animal ingredients (80%) fruit, vegetables and botanicals (20%) and 0% grains. Mother nature evolved dogs and wolves as carnivores, as such they get their energy and nutrient requirements mainly from meat protein. This is the prime reason for formulating Simpsons Premium Adult Mixed Meat + Fish 80/20 Dog Food, which is a unique 80/20 recipe made with human-grade meat, fresh selected vegetables and botanical herbs. In order to support joints and movement, especially in aging dogs, the recipe also uses chondroitin, MSM and glucosamine. Simpsons Premium uses only the highest quality ingredients without any artificial flavourings, colours and preservatives. Vitamin E, a strong antioxidant, is used as a natural preservative.