Armydogdoc,
Glad I could help
I owe your profession...I have a GSD, 11yrs old, 1 titanium femur, nylon hip,1 fused hip, a "dicky ticker", lost his spleen, and he still tracks like a 4 year old...
He's training the next generation, and loves his life (and his 2 stumpy tail cattle dog mates)...
Rommel and I thank you and your colleages.
Smokey