Can't answer your question but my 5.5 lb. Yorkie is doing this also. She is a little over 2 years old and right in the middle of her back there is about a nickle size spot that is jet black. The rest of her fur on her back is kind of silvery/black. This spot just happened right after I groomed her a couple of weeks ago.
__________________  Karen, mama to Macy and Molly  It is easier to fool people than to convince them they have been fooled. (Mark Twain) |