Where's My Cow? is a picture book written as a companion book to the Discworld series. The book details Duke of Ankh, Commander Sam Vimes reading to his son, Young Sam.

The plot of the story involves a lost cow and the subsequent search for it's location. The story has a rigid structure, in the pattern that follows:

Is that my cow? It goes "HRUUUGH!" It is a hippopotamus! ... No, that most certainly is not my cow.

This goes on for a fair while.

On the cover, it has the badge of the Ankh Morpork Librarian's Award.