Mo. Rev. Stat. § 273.050
Current with changes from the 2023 Legislative Session
No dog shall be permitted to be and remain within the limits of the state unless the owner thereof, or someone for said owner, shall have caused such dog to be listed and the tax imposed by sections 273.040 to 273.180 to be paid on or before the first day of February of each year hereafter.
§ 273.050, RSMo
RSMo 1939 § 14546