I just got alerted to this book by an artist friend doing artwork for it:
The City of Smoke and Mirrors - an Armadillo Mystery (Nick C. Piers - 2012)
It appears to be a camp pulp noir adventure featuring a hard boiled detective...who happens to be an anthropomorphic armadillo. The blurb available for prieview seems to not take itself too seriosuly, so this could be fun.
Anyone read this or know the author?