What should I feed to my Doberman puppy?

We raise Boston Terriers. We take them to the Flea Market to sell. Many people commented on the health and condition of our dogs. They ask what we feed them. We feed our babies Iams puppy food, it's in a yellow bag. We don't feed our dogs canned food at all unless a little one is having trouble getting started, then we'll supplement a spoon full here and there. Then they graduate up to the adult formula. I like it because it helps their stools stay firm and not mushy. It is a dog food that really works for us. And always make sure they have lots and lots of fresh cool water. I live in the south and it's nothing to have to change thier water all through-out the day.