(A) It shall be unlawful for the dog of any person who owns, harbors or keeps a dog, to run at large.
(B) A person, who owns, harbors or keeps a dog which runs at large shall be guilty of a misdemeanor.
(C) Dogs on a leash and accompanied by a responsible person or accompanied by and under the control and direction of a responsible person, so as to be effectively restrained by command as by leash, shall be permitted in streets or on public land unless the city has posted an area with signs reading “Dogs Prohibited.”