It is unlawful for any person owning, harboring, or having the care, custody or possession of any dog to keep or maintain such dog in any place in San Luis Obispo County, or except as provided in Section 9.08.180, unless such dog has been vaccinated as provided herein. This section shall have no application to dogs under the age of four months. (Ord. 2474 § 1 (part), 1990)