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Originally Posted by Fluffyspoos
This had me going "Aaahhh!" thanks for the great explanation! So you're saying those dogs will eventually fade to a washed out color?
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Not necessarily, like I mentioned, many genes are involved in coat and point color. Often the loss of pigment can vary in intensity. Some dogs might have a slight fading on their nose and others will have their nose turn completely pink and have their eye rims affected as well.
A black changing to pink/liver nose can also be the results of a “winter” or “snow” nose (which is not permanent) or can be caused by the disease Vitiligo, but I think that is unlikely because Vitiligo sufferers also looses pigment in their coat, which causes patches of their coat to turn completely white.
A dudley nose does not affect the coat color as far as I know and there is not really any treatment for it. But seeing as it doesn't harm the dog, I don't think it is something that you should be too concerned about.
For some reason I thought I read somewhere that you could slow the loss of pigment process by adding kelp to your dog's food?!?! But don't take my word for it
I've never tried it. "Life Line" makes Ocean kelp that you can add to dogfood if you want to test the theory.