The best tool for breeders in the fight against canine hip dysplasia (CHD), to come along in years, is the SV's HD Zuchtwert, or Breed value assessment number (HD ZW). The HD ZW number is an estimation of the probability that a dog will produce progeny with CHD.
Historically, dog shows and other related events were developed with a very specific purpose in mind – to select and recognize those dogs with the best breeding characteristics, in order to guarantee the future health, stability and vitality of individual breeds. The practice of dog breeding is dedicated to this purpose, and dog breeders have a responsibility to do what is best for the breeds with which they choose to work.
When one thinks of the bulldog, the image that first comes to mind is probably that of the English Bulldog, with its squat build, round head and distinctive “face that only a mother could love.” But there is another kind of beloved breed of bulldog: bigger and more athletic, and ruggedly handsome where the English Bulldog is charmingly ugly. This is the American Bulldog, a breed that almost literally came back from the dead to become widely popular as both a working dog and a family pet.