The Diary of a Killer Cat is a highly amusing short novel told from the perspective of Tuffy, a seemingly normal family cat who is, in his own mind, a serious predator. Tuffy's diary entries detail his disdain for his human owners and his casual, matter-of-fact accounts of the "gifts" he brings home, such as dead birds, mice, and eventually, the neighbor's prized rabbit. The book is a dark comedy that plays on the gap between how humans perceive their pets and how cats truly see themselves—as ruthless hunters—all delivered with Tuffy’s dry, cynical wit.