Complaint / review text:
Bought a male puppy from them about 5 yrs. Ago.
After perhaps a week, once my wife had bonded with the dog, It became apparent that something was not right with his front legs. Our vet did x-rays; he said "I think there's something seriously wrong here", and referred us to a specialist. Turned out that one of the bones in each leg wasn't growing; the growth plate had closed. The growth of the other bone was bowing the legs, and damaging the shoulders.
This $900 dollar puppy subsequently required $10,000 of orthopedic surgery to alleviate the condition. His legs will never be 100%. Despite the fact that DNA testing done @ the University of Colorado confirmed the genetic fault, Sander Haus would never admit that it indeed existed. Their only concession was a $400 partial refund.
Sure we could have taken him back - most likely to be euthanized.
We were fortunate enough to afford the surgery; many people wouldn't be. Could never, in good conscience, recommend this breeder to anyone.