Board Thread:Questions and Answers/@comment-28096636-20170813022819/@comment-18172179-20171018050417

Although O'Neil was a driving creative force in Batman in the 70s, I doubt his vision of the Joker would willingly get a pet... even if it's a hyena. I will say, you are in the right decade, though.

Also, this is a trick question. The first instance when this happened is kinda misleading as the situation was actually developed a little later. Either way, both answers are valid.