"Kennel" means a structure, enclosure or portion of any premises in or at which dogs, cats or other domesticated animals are boarded or kept for hire, or in or at which dogs, cats or other domesticated animals are kept or maintained by any person other than the owner thereof, or in or at which six or more cats and four or more dogs over the age of four months are kept or maintained. This definition shall include boarding kennels but not animals kept in pet shops or animal hospitals. (Ord. 2046, § 2 (Exh. A), 2018; Ord. 1634, § 202, 2004.)