My yorkie was a precious puppy all black pigments and up untill she was 7 mo old her nose and pads starting turning pink. She was spayed a few wks ago and now her nose and pads are almost all the way pink. Does any one know what you would make this happen. My vet is puzzled. He said that maybe it was lack of sunshine but she is walked every day and goes to the park on the weekend.HELP