Champion Petfoods offers improved formulations and new flavors in its Acana Singles line of limited-ingredient-diet dog food. The upgraded line increases the real meat ratio from 50 percent to 60 percent, and the enhanced recipes reduce carbohydrate ingredients for a shorter, cleaner label. New flavor additions include Turkey & Greens and Beef & Pumpkin. Enhanced recipes include Duck & Pear, Pork & Squash and Lamb & Apple. The foods are available in 12-oz., 4.5-lb., 13-lb. and 25-lb. packages.