No running allowed. And you must be quiet. But when a lion comes to the library one day, no one is sure what to do. There aren't any rules about lions in the library. And, as it turns out, this lion seems very well suited to library visiting. His big feet are quiet on the library floor. He makes a comfy backrest for the children at story hour. And he never roars in the library, at least not anymore. But when something terrible happens, the lion quickly comes to the rescue in the only way he knows how. Michelle Knudsen's disarming story, illustrated by the matchless Kevin Hawkes in an expressive timeless style, will win over even the most ardent of rule keepers.