Colorado Revised Statutes Title 25. Health § 25-4-615. Further municipal restrictions not prohibited

(1) Nothing in this part 6 shall be construed to limit the power of any municipality within this state to prohibit dogs from running at large, whether or not they have been inoculated as provided in this part 6; and nothing in this part 6 shall be construed to limit the power of any municipality to regulate and control and to enforce other and additional measures for the restriction and control of rabies.

(2) Notwithstanding subsection (1) of this section, a municipality shall not require a dog, cat, or ferret to be inoculated against rabies any more frequently than is recommended in the “Compendium of Animal Rabies Control” as promulgated by the national association of state public health veterinarians, and a veterinarian may issue a written waiver exempting an animal from a rabies vaccination order as provided in section 25-4-607.