No person shall keep, harbor, own or knowingly allow to be in or
upon the person's premises any dangerous exotic animal, including
any lion, tiger, leopard, ocelot, jaguar, cheetah, margay, mountain
lion, Canada lynx, bobcat, jaguarundi, bear, hyena, wolf, coyote,
any deadly, dangerous or venomous reptile or any other exotic animal
declared by the Board of Aldermen to be dangerous; provided, that
the provisions of this Section shall not apply to a properly maintained
and licensed zoological park, circus, scientific or educational institution,
research laboratory or veterinary hospital.