A dog found running at large without a valid current dog license tag issued by the authority of a county or municipal corporation pursuant to the provisions of part 21, 7-23-4103, and this part may be seized and impounded by any sheriff, deputy sheriff, police officer, game warden, county poundmaster, or other law enforcement officer.
Seizure And Impounding Of Dogs Running At Large Without Tag
Mont. Code Ann. § 7-23-102, under Local Government Control of Dogs.
Mont. Code Ann. § 7-23-102