The people I got my GSD were all from Germany and there dogs came with them. They were all in the house when I got her as a pup, I had to talk to there 17 year old kid to understand what we were all talking about. I do agree that German blood lines are more healthy, the people I got her from assured me she was from a farm working line of dogs and they lived in Elizabeth on a working cattle farm.Click image for larger version.  Name: DSC00130.jpg  Views: 33  Size: 274.1 KB  ID: 62472
When she is " on track " you may need to break her concentration by being a little more firm.