as long as you get them from working stock its half the battle ,yes the kc has f****d up the strain by infusing wolfhound blood to give them broarder heads and make them thicker set..!! simple dont use them in the mix..!! jigsaw got mine from alan charles of the doherty book fame and the parents kill r/h/f , theres a few people off this site that keep and work them , i had one in the ,s but after the ban ,kept smaller rabbiting dogs , now iam in ireland got another ,its like any cross you goto sift through the shit and do your homework !! get one from working stock