Very interesting question that I've always though about myself, Blitzkrieg1. I've never seen a half brother half sister breeding (2-2)with the GSD and every time I've even seen it mentioned, I've seen the way people cringe. I've always wondered about it, because in the other breeds that you mentioned (Mals/Dutchies, hounds, sporting dogs, game bred dogs,hunting terriers,etc.), it's quite common. Showing a GSD pedigree to a fancier from one of the other working breeds and mentioning a dog bred 5-4 on a famous GSD,(say Mink) would be almost laughable . One thing I've learned is when looking at a GSD pedigree, you REALLY have to know WHERE those traits are coming from. Cliffson, I do understand a lot better now that you have mentioned the balance of the breed and being able to maintain it. I had always thought of other reasons.