New Mexico Statutes Chapter 77. Animals and Livestock § 77-9-2. Earmarks; cutting; penalty

Any person, firm or corporation of this state may adopt and use an earmark, and such earmark shall be taken in evidence in connection with owner's recorded brand in all suits at law or in equity in which the title to stock is involved. Such earmark shall be made by cutting and shaping the ear or ears of the animal so marked, but in no case shall the person so marking the animal cut off more than one-half of the ear so marked, neither shall anyone mark by cutting an ear on both sides to a point. Any person, firm or corporation who violates this section shall be guilty of a petty misdemeanor.