Depends on the food and how potent it is. Yoshi, my 105lb ridgeback gets about 1 1/4 to 1 1/2 cups of Fromm 2 times a day. Milo who is a little smaller gets about 1 1/4 cups 2x a day. Nandi gets about a cup 2x a day and Amrika is like Milo, about 1 1/4 cups 2x a day. If I had to feed my dog three cups at a time I'd move to a more potent food.