Always wanted the trait to be the bloodline, for example I want Bolio dog that is a head riding dog with quick mouth and natural strength. Not a 15 min barnstormer only hitting the backend. When I look for "bloodlines" I want the traits of the dog that bloodline was built around. Not that out of norm don't happen but if it's built around certain dogs that what you get more often than not.. I think it depends exactly what traits you are talking about, if they have certain style or attitude chances you might get it but you can't just count their attitude or traits you have to find out what each littermates and half siblings are doing as well to get accurate picture.