Hi! My husband and I have adopted a (now) 9-wk-old GS puppy named Otto (of course). It's been 10 years since we've had a puppy, so I have lots of questions and will welcome the sage advice of all you experienced dog owners. Otto is really cute and rambunctious and looks like he will be a dominant dog, so I want to be sure he knows who is alpha around here and we get off on the right foot.