My last dog Thais was a pure white shepherd.
At age 1 he had to have an operation because one testicle wouldn't descend,
at age 6 he succumbed to that hereditary deterioration of the crucial ligament thing.
A wonderful, super well behaved dog.
No more pure breds for me, thanks!
I am, and always have been, a firm believer in hybrid vigour.
Only reason I got Thais was because my ex-wife liked white shepherds and that way I could talk her into getting another dog.
One thing though.
If you can't train a white shepherd, you probably shouldn't own a dog.
Man, they are easy.