This is called a "Piebald" deer. It's normally considered a genetic defect and extremely uncommon in deer. It reminded me of the same markings a pinto pony has.
Thanks! This was a lucky shoot. I happened on the deer by accident while it was feeding along the edge of a field. It wasn't too concerned about the car until I got about 20 feet away.
Until this, I had never heard of a "Piebald" much less actually seen one.
