Description Best friends Worm and Butterfly must spend time apart in this Level 1 Ready-to-Read Graphics book-the sequel to Theodor Seuss Geisel Honor Book Worm and Caterpillar Are Friends. Worm and Butterfly are best friends. Worm says best friends stick together, but Butterfly has to fly somewhere warm for winter. Can they still be friends when they are far apart? Ready-to-Read Graphics books give readers the perfect introduction to the graphic novel format with easy-to-follow panels, speech bubbles with accessible vocabulary, and sequential storytelling that is spot-on for beginning readers. There's even a how-to guide for reading graphic novels at the beginning of each book.