Have you heard of the white deer of the Seneca Army depot? With 20+ square miles of fenced land, the abandoned depot has become home to, not albino and not piebald, but leucistic white deer. The deer are simply white from a genetic mutation which means they lack all pigmentation in their hair but have the normal brown-colored eyes.
Photo by Dennis North, other photos from http://www.senecawhitedeer.org