NOTE YOU MAY RECEIVE ORIGINAL FORMULA AND PACKAGING DURING THE TRANSITION Best-in-class nutrition and big-time taste? Merrick Classic Healthy Grains dry dog food treats your dog to both and more, in easily digestible recipes that balance protein, fruits, vegetables and a healthy blend of whole grains—including ancient grains to support optimal digestion—and supply high levels of fiber, Omega-3 and 6 fatty acids, glucosamine and chondroitin. Merrick Classic Healthy Grains is best for puppies and adult dogs. FULL OF FIBER AND WHOLE GRAINS. Crafted with a blend of grains including brown rice, barley and quinoa.