I'm a Frog! (an Elephant and Piggie Book), Hardcover/Mo Willems

Gerald is careful. Piggie is not. Piggie cannot help smiling. Gerald can. Gerald worries so that Piggie does not have to. Gerald and Piggie are best friends. In I'm a FrogPiggie has some "ribbit"ing newsCan Gerald make the leap required to accept Piggie's new identity?