Obviously many of the posters didn't read the link. These dogs are 100% Lab, bred to be seeing eye dogs. They're descended from a kennel that was well known for producing quality hunting and show dogs. The mixed color phases aren't accepted by the AKC but it's strictly color. No other traits are affected
The link explains the rare combination of genes that produces this color phase. There's no Rot or Dobie in them. The kennel hasn't cleaned them out because they don't show them and they're excellent seeing eye dogs.
