What metaphors are used in The Silence of the Lambs by Thomas Harris?

Hannibal Lecter’s name and peculiarly idiosyncratic diet made his media nickname a natural that could hardly be avoided. A nickname no doubt that someone like Lecter found enjoyable. Likely for more tasteful to him than the metaphorical way in which his relationship to that media is described:

“Dr. Hannibal Lecter was catnip to the media”