I have a 4 month old Rottweiler/hound X puppy. We had initially wanted a GSD, but my wife had seen this little girl in a rescue shelter, and low and behold we ended up with a dog. So now we have an opportunity to get a German Shepherd (German blood lined) from one of the best breeders in the Pacific Northwest. We have been on the waiting list for a long time. So we have decided to get a male puppy. My question is, what are some things that you wish somebody would have told you, or wish you would have known about the German Shepherd breed before you had brought one home. I think we have been very spoiled with our little Rotti/X. She is already potty trained, she is really calm for being a puppy, learned sit, stay and lay down in a matter of 1/2 a day, was crate trained after the first night, etc.... I just know it won't be this easy with another dog. Any advice would be much appreciated.