dheepakh, not only YB but Spitsvuur, which I would not buy. There is no Black Boerboels, those are mutts and cross breeds. Find another breeder if you can. If he was just using the Gretchin line you would be okay. The fact that he is placing the size of the dogs head above health and temperament also says lots to me. A good dog has nothing to do with the size of his head or the thickness of his legs. I wish you the best of luck finding a good breeder but karma is not one I would trust.