It is unlawful for any person within the city, to own, have an interest in, harbor and feed, or have the care, charge, custody or possession of a dog over the age of four months, whether such dog is confined or not, unless such dog has a current vaccination with the rabies vaccine approved by the California State Department of Public Health and is officially tagged as provided for in this chapter. The vaccine shall be used exclusively to vaccinate all dogs within the city. Vaccination with the vaccine shall be valid for a period not to exceed one year when administered to a dog under one year of age, or three years when administered to a dog over one year of age. (Ord. 163 § 8(G), 1997)