So I happened to make reference to Jack Hanna in an email this morning and went to Wikipedia to get the correct spelling of his name. There, I found this nugget of information:
Though unable to secure zoning as a zoo for his father's farm, the two [Hanna and his wife] opened a pet shop and petting zoo. In 1973, a three-year old boy was mauled by a lion at Hanna's farm and lost his arm. Hanna settled the subsequent lawsuit out of court, shut down the petting zoo, and moved his family to Florida.
Despite my total lack of experience in caring for exotic animals, I'm thinking of changing careers and becoming a zoological management consultant. I'm full of such good ideas that apparently haven't occurred to these people. Lions -- probably not the ideal animal for a petting zoo.