There's an author named Cleo something who writes cozy cat mysteries.

[rampartc]

4. my wife, who specializes in mysteries where a cat is the detective, does not know.

i was shocked to learn how many of these there are ......

johanna fluke writes about mosia
sophie kelly has hercules and morris
rita mae brown uses mrs murphy and pewter
lilliam brahms jackson has coco and yum yum
miranda james has diesel

fortunately this is the old lady's only bad habit.