Here's Casey's tail...
Just to clarify. All the photos shown make it very clear to me that the dock job was poor. Pixie - we've had a few solid liver tails in our litters and we have never had a bald nub. Same goes with all colors - ticked and white too. My vet takes a lot of pride in the method he uses to dock and it shows. He cuts the top side of the tail (think when the dog is standing up) a little longer than the bottom, creating a beveled edge. Then he pulls the skin with hair on it around the end and puts a stitch or two in on the underside of the tail. Produces a beautiful tail every time.
Gunner is solid liver and has a bald spot ont he top of his tail. I also think it was from a not so good docking of the tail. It has been that way since we got him at 3 yo and is still like that today at 5-1/2. Vet seems to think it is becasue of the way he sits or lays and it rubs it off. there is stubble on it it just doesn't get long enough to call hair
I have a liver gsp and I cannot find a bald spot either. Just picked up a second and her white tail is fully "haired"