Mild hip dysphasia in my understanding may not even show any symptoms but simply rules out a dog for breeding purposes. In other words if not for the x-ray you would never know the dog had it - as was the case with a stunning German Shepherd boy we had when I was a kid. Ringo was a gorgeous dog who lived a long healthy life and died peacefully at 14 in his sleep. His hips in the least two years of his life showed the usual slight stiffness but not anymore than any other dog we had.