Just because your dog is showing a little gray and doesn’t have energy like before, it doesn’t mean that he or she can’t continue to lead a healthy, active and long life. Oxidative damage is believed to contribute to aging; therefore; Vitamin E, a powerful antioxidant, is incorporated into the food at the maximum level allowable. In addition, since weight control is a common concern in older dogs, Innova Senior Adult Dog Food has slightly more fiber from whole grains, fruits and vegetables, and 9% less calories than Innova Adult Small and Large Bites.