ARM 32.3.1303
ARM 32.3.1303. IDENTIFICATION
Cite as Mont. Admin. R. 32.3.1303
(1) All animals one year of age or older shall be identified. All animals less than one year of age must be identified upon change of ownership unless moving to slaughter. Identification shall consist of a tamper proof eartag and either an electronic implant, a flank tattoo or an ear tattoo all of which provide a unique identification number in accordance with the instructions of appropriate authorities.