I know what the bag says but I think based on the energy level of the dog that should vary. I am feeding mine 5 cups a day - 2.5 in the morning and 2.5 in the evening with a teaspoon of pumpkin and the digestive enhancer powder. Does anyone think this is too little or too much? Lucy is steadily gaining weight and is 46 lbs at 9.5 mos. and Sam is 68 lbs. He has actually lost weight due to the increase in his activity level since Lucy arrived.