Mastiff

Mastiff is the third novel in Tamora Pierce's Provost's Dog trilogy, released in 2011 by Penguin Random House. It follows a young Provost guard-woman in a fantasy kingdom called Tortall. The novel, as with all the Beka Cooper books, is written in first person diary form. The actual diary is said to be written in a mixture of Dog code and Beka's personal code.