The Lion in the Mouse' is a beautiful picture book about a little mouse that wants to be as brave as a lion. Will he succeed? Apprenticing to the lion A little mouse feels overlooked and misunderstood because of his size and looks up (literally) to the lion, whose loud roar is heard by everyone. The mouse decides, despite his fear, to become an apprentice to the lion. But once he comes nose-to-nose with the most powerful predator on earth, it turns out that there is also a scared mouse hidden inside that tough lion.