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The percentage of sires (dashed lines) and dams (solid lines) (of dogs born per year) that have undergone screening and so have a hip score, in Labrador Retrievers (LR—black), Golden Retrievers (GR—blue) and German Shepherd Dogs (GSD—green), Rottweiler (ROTT—orange), Bernese Mountain Dog (BMD—red), and Newfoundland (NEWF—gray). The figure illustrates that the percentage “plateaus” in the late 1990s/early 2000s.
