Hello how may I help you? i need some help with my new dog I can offer help with your new dog. how much dog food should I be going through each week? It really depends on the type and age of your dog. What type of dog do you have? it's a big german shepard Generally with dry dog food they say 3% of the dogs weight of food per day. Do tou have an idea of the dogs weight? i think he's about 60 pounds I would say 3 cups of food a day,21 cups in a week. I would guestimate that to be 5 punds of food. perfect! thank you so much! You also want to provide fresh water at all times. will do