N.D. Cent. Code § 36-12-03: Animals of drover to be branded - Requirements governing

Every drover shall have all animals in the drover's charge or control branded or marked with one uniform brand or mark. Each horse, mule, and head of cattle in the drover's charge or custody must be branded in a conspicuous place with one distinct ranch or road brand of the owner. All sheep in a drover's charge or custody must be marked distinctly with a mark or device sufficient to distinguish the same readily from other sheep.