Wis. Stat. § 95.38: Altering records; tampering with ear tags.

(1) It shall be unlawful for any person to in any manner change any test record, falsely record any test, misrepresent the identification of any animal or any other material fact on any test record, certificate of veterinary inspection, vaccination record, claim for indemnity, or any disease control report or application to the department. It shall be unlawful for any person to induce or to conspire with another, either directly or indirectly, to do any of the said prohibited acts.

(2) No person is permitted to in any way tamper with, insert or remove from the ear of any animal any ear tag or registration mark which is or may be used for identification in disease control work except upon authorization from the department.

(3) The department may adopt rules that are necessary to administer this section.