Is it possible for animals to be both melanistic and albino at the same time?

If one is heterozygous for the albino trait one can experience somatic cell crossing over resulting in clones of cells that are albino and clones of cells that are normal melanistic. That can result in a patchy phenotype of melanism and albino. Also there are mutations in the migration rate of neural crest cells that give rise to skin pigment cells. The migrate laterally from the spine around the animals circumference to meet at the ventral midline. If they do not reach the midline the skin there has no melanin pigment. These are often seen as blazes of albino skin in humans or hair in horses that are often exhibited on the forehead, where normal pigment cells will converge to give uniform forehead skin or hair color, but in a carrier of the neural crest migration mutant will exhibit the albino blaze.