Dog Man: Grime and Punishment: A Graphic Novel (Dog Man #9):

The mayor has had enough of Dog Man's shenanigans in the ninth book from worldwide bestselling author and artist Dav Pilkey.
Dog Man's really done it this time! He hands over his badge and clears out his desk, but while he may be out of a job, he's not yet out of hope. With his friends at his side, can Dog Man dig himself out of this hole and paw his way back onto the force?

Dav Pilkey's wildly popular Dog Man series appeals to readers of all ages and explores universally positive themes, including empathy, kindness, persistence, and the importance of doing good.