I saw a few about 8 years ago while I was still living in the Western side of Washington state. I was driving through Olympia when two Piebald does ran across the road in front of me. I was excited and have never seen anything like it before. By the time I got home I looked up what they were. The ones that I saw where almost all white except a small patch on the hind quarters, head and they had brown spots like a fawn. Both does were mature. A few years later I saw a young buck close to where I saw the does. I have not seen any since then.