"Someone stole Otto's birthday! When Otto the cat and his robot sidekick Toot follow the crook, they discover a topsy-turvy world where rats chase cats and people wear underpants over their clothes"--

Otto's Backwards Day 2015, Beginning Readers

ISBN-13: 9781614794264

Hardcover

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Otto's Backwards Day 2013, Toon Books

ISBN-13: 9781935179337

Hardcover

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