A humming sound grows louder and louder. Suddenly, a bug the size of your hand is resting on your shoulder! Wow! Big Animals introduces some of the largest, and most interesting, creatures on planet earth Spectrum Readers are the perfect Common Core aligned tool to support the development of nonfiction reading skills crucial to a young reader's success. Each leveled reader features high-interest informational content, exciting full-color photo illustrations and Common Core aligned comprehension