Neb. Rev. Stat. § 54-641.03

Each breeding dog shall be identified by the implantation of a microchip, and each dog's health records shall accurately record the appropriate identification. The department may by rule or regulation require identification of any dog by tag, tattoo, or other method if the microchip system is determined to be ineffective. A commercial dog breeder licensed prior to October 1, 2012, who utilizes a method or methods of identification other than microchipping as authorized by rule and regulation of the department prior to October 1, 2012, may continue to utilize such method or methods.