We have a two year old Old English/English Bullie that is Red/White. It's funny she has half of a white face and half brown with black around her eye. Lately she has developed black around the white half of her face around her eye and tons of black spots on her skin (behind the ears and belly). Her rump is black now and it goes down the back of her legs. These spots are pretty cool looking (almost Dalmation type) and they do not bother her. It's just strange that they have trippled in the last week - she almost looks like a cow! Can the sun do this and is it anything to worry about?