|A Gordon setter in the breed's only acceptable color.|
- Incorrect tan markings
- Dogs with more or less than than required in the standard
- Inherited on the Brown locus, a dog must be bb to be liver
- Inherited on the Extension locus, a dog must be ee to be recessive red
- Too much white
- Inherited on the Spotting locus, a dog with a variety of genotypes can have too much white
|Too much white|
|This dog appears to be liver|
|Too much tan|
|Too little tan|
Another major concern in the Gordon setter and any other breed is a loss of genetic diversity due to selective breeding. Since Gordons of only one color were favored, a lot of diversity was lost rather early on in the breed. Continued shunning of off-color dogs only drops more potential sources of genetic diversity from the breed and risks loss of some very good, sound individuals based on a silly cosmetic preference.
Sources are the American Kennel Club, Gordon Setter Club of New South Wales, and Gambit Gordon Setters. Images are from Wikimedia Commons or Flickr.com under Creative Commons licenses: one, two, three, four, five.