Everyone has one, so they're nothing to be ashamed of, right? The duck's bum bum is fluffy while the pig's is round, the elephant's bum bum is big and the monkey has a very red one. Prereaders are sure to be amused at this procession of animals, each of whom looks a little unsure until its "bum bum" is displayed. In the deceptively simple, stylized cartoons of Japanese illustrator Taro Miura, the baby has the cutest bum bum of all; on the final page, the bare-bottomed tot walks merrily away.