Today I Will Fly! (Elephant and Piggie Series) 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. Today, I Will Fly! is the funny introduction to the characters. Piggie is determined to fly. But Gerald the elephant knows that's impossible-isn't it?