Doc, the increasing prevalence of health/temperament problems in pb dogs is (IMO) overwhelmingly due to misguided breeding. Many breeders, including many of the so called best, are breeding to produce dogs that win contests & NOT long, lived healthy, robust companions.
I nearly scream when I hear/read breeder discussions that go into tremendous detail & deep analysis over how a particular breeding will benefit shoulder assembly, tail carriage, eye shape, length of loin, ear set, muzzle length & substance. Health & longevity are dealt with in several quick statements that lack depth or analysis. HOWEVER, it's invariably claimed they're the *most important* considerations apart from temperament which gets a bit more discussion than health & longevity, but considerably less than the beauty pageant stuff.
I HUNGER, <u>HUNGER</u> to hear real discussions of how long & how well various branches of the breeding families lived, what health problems they had, when these presented, the heritability of these problems/conditions, specifically HOW a particular breeding will improve or maintain temperament & increase health & longevity.
I'd be wealthy if I had a dime for every time I've heard a breeder murmur, 'the vet assured me it's not genetic...' when in all probabilty there is almost certainly a genetic component, indirect if not direct.
FTR, IMO GSD breeders are neither generally better nor worse than other pb dog breeders. Our dogs by any breed (or none) simply deserve much, much better. To the extent that I believe in sin, I believe it is a grievous sin to breed dogs that are increasingly unhealthy & short lived...to breed dogs incapable of running, jumping, playing...to breed dogs that can't breed naturally, that can barely breathe unassisted. What, in the name of all that's sacred, possesses people???????? How can anyone feel ENTITLED to do such dastardly things to sentient creatures??????
Let me stop. I'm getting wound up.