No person owning or having charge, care, custody or control of any dog shall cause, permit or allow the same to be or to run at large, upon any highway, street, lane, alley, court or other public place, or upon any private property or premises other than those of the person owning or having charge, care, custody or control of such dog in the city, unless such dog is restrained by a substantial chain or leash not exceeding six feet in length and is in the charge, care, custody or control of a competent person and any person violating any of the provisions is guilty of a misdemeanor.
(Prior code § 4720)