Whenever any Animal Services Personnel discovers through a vaccination certificate obtained from any Veterinarian that a Dog named thereon is unlicensed, the Owner or Custodian of such Dog will be notified by mail that such Dog is unlicensed and that such Dog must be licensed within thirty (30) days of the date of the notice. The Owner or Custodian of any such Dog which has been previously licensed in Tulare County shall be subject to a delinquent fee. The Owner or Custodian of any such Dog which has never been previously licensed in Tulare County who obtains a license within thirty (30) days of the date of the notice shall be subject to an administrative fee plus the license fee or any other applicable fee. The Owner or Custodian of such Dog which has never been previously licensed in Tulare County who does not obtain a license within thirty (30) days of the date of said notice shall be subject to a delinquent fee, plus the license fee or any other applicable fee.