Eggs hatch and become tadpoles. The tadpoles nibble plants. They grow legs and start to breathe. Now they are little bullfrogs. They eat flies, fish, and spiders. In the winter they hibernate. And after three years, they are adult bullfrogs. Rumm...rumm...rumm. Lyrical prose and elegant art depict the life cycle of a bullfrog in this nonfiction picture book by an award-winning poet-biologist.