All persons owning, keeping, or harboring any dog more than three (3) months old and any cat more than six (6) months old shall be required to retain evidence of such vaccination as is required in Section 3-204 and shall attach a metal tag or other evidence of vaccination to a collar which shall be worn at all times by the dog or cat so vaccinated, pursuant to the provisions of T.C.A. 68-8-107 or any subsequent legislation. (Ord. #818, 02/04/93).