I have a few questions?
Is it a purely inherited defect?
If it is inherited how do dogs with develop HD with pedigrees of all good-excellent rated hips?
Should dogs continue to be tested for HD every year after they are 24 months?
Can an a dog at 24 months have good-excellent rated hips develop HD later in life?
If they can should breeders be having their dogs retested and rated regularly after the original 24 month rating? Is this common practice already?
Do a pup's chances of developing HD increase if it was raised in a home with hardwood or other slippery type floors?