Hello how may I help you? I need advice about my pet please I can help with that How much dog food should I go through in a week? What kind of dog do you have? I have a mastiff And how much does he weigh? He weighs 120 pounds Stick to 2 cups a day with 2-3 treats max Anything else? How about in a week? Depends what size bag you get Ok, thanks for your help!