My last three dogs came from 2 breeders who had similar values: Health, of course, (conformation to a certain degree) but more importantly temperment, and heavily-socialized from the moment they are born. Augie is a purebred Aussie - but very un-Aussielike in that the entire world is his best friend (they are usually a bit aloof with strangers). His breeder will often turn down applications where she feels her dogs will not be a good fit. In MY case, my dogs go to work with me, so MUST be friendly.