No dog license shall be issued unless proof has been presented that all dogs owned by the kennel owner or operator in the kennel have been vaccinated against rabies in the manner prescribed in this title, nor shall any kennel license be issued until the director of animal control or his authorized representative has first made a determination that a kennel is allowed in the zone and that the kennel is operated in a sanitary and proper manner so as not to constitute a nuisance to the neighborhood. (Prior code § 2-72)