If my child was heard to say “I want to play with that large dangerous animal that can literally tear me apart in a moment” the last thing I would do is turn my back. Preschoolers can get into anything. Some even more than others, and this boy must have been one.
This zoo managed to have gorillas since 1978 without a story getting national news. The zoo, through sheer negligence, was put in a terrible situation. Not only was the great ape put in a cage through human hands, it was killed by human hands, through human neglect.