"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"--Publisher. Interest Level: K-3 Reading Level: 1.9 ATOS Book Level: 2.1 AR Interest Level: LG AR Points: .5 AR Quiz: 158772EN Lexile Measure: 120 Lexile Code: GN (Graphic Novel).