This inventive tale of two mice fighting over a rock is "conceptually rich and a whole lot of fun" ( School Library Journal).

Start with one rock. Add two mice. The end result? A never-ending battle! Or is it?

Using only one word, along with many brightly colored and lively illustrations, Jeff Mack, acclaimed author of Good News, Bad News, brings his hallmark humor to this rollicking book that will have readers of every age reconsidering whether "Mine!" is the best answer.

"A fun read-aloud." — Booklist

"A behavioral window for some, a mirror for many, and a delightful book for all." — Kirkus Reviews (starred review)