My dog Boo didn't have a chest until he was 2 1/2. We thought his elbows were just meant to touch... Now he's got a beautiful , "manly chest".
You can't eat your way to a chest (all the women here know
that...
), you have to wait until it develops. And from what I have seen at shows, some dobies don't do well because they never develop the "proper" chest....