In all honesty . I really don't know anything about bloodlines. everyone out crosses at one time or another . when i picked this dog i just looked back a few generations in pedigree and try to get a round about idea of what the dog will be. health wise ,temperament , size and looks. A lot of kennels in EU do strict line breeding and stay tight in their own program. Some kennels here in america do as well. I have a lot to learn about Pedigree and blood lines so i am limited. their are world champion or two on both sides of my dog but they are 4 and 5 generations deep. But i did not even really look at them they were so far back .