If there's a problem in school, there's no substitute for the world-saving substitute teachers of the S.O.S.! This is the second book of this hilarious, highly illustrated early chapter book series.Oh no!Noah--part time classroom pet, full-time evil mastermind--has his paws set on settingfree all the animals at the city zoo.Good thing that when there's a problem, there'sno substitute for the super substitute teachers of the S.O.S.! HarperChapters build confident readers one chapter at atime! With short, fast-paced books, art on every page, and milestone markers atthe end of every chapter, they're the perfect next step for fans of I Can Read!