Every licensed veterinarian and every operator of a facility for boarding animals or pets shall have a lien on each animal or pet treated, boarded, or cared for by them while in their custody and under contract with the owner of the animal or pet for the payment of charges for the treatment, board, or care of the animal or pet; and the veterinarian or operator of a facility shall have the right to retain the animal or pet until the charges are paid. Facilities for boarding animals or pets shall include, but not be limited to, veterinary hospitals, boarding kennels, stables, livestock sales barns, and humane societies.