Elephant & Piggie: Pigs Make Me Sneeze! by 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 Pigs Make Me Sneeze!, Gerald believes he is allergic to his best friend! Will he have to stay away from Piggie forever?