Hello how may I help you? Approximately how much dog food should I go through in a week? Well it depends on the dog's breed. Some eat more than others Ok i have a boxer what's the size of the dog 70 lbs How much of dog food are going through currently on weekly basis 25 lbs For the size of the dog it seems normal. Are you concerned its too much Yes Very expensive also maybe talk to your vet and see if it should be adjusted