This companion to How Dogs Really Work (1993) explains that cats originate on Planet Nip, that they are here in a struggle for world domination, etc. The tone is tongue in cheek throughout, but the text itself is not very funny; the endless explanations will bore preschoolers, and older readers can find funnier stuff on their own. The work involved in the layout and illustrations is awe-inspiring; many of the drawings are diagrams or, rather, parodies of diagrams. The book is handsome, with a table of contents and an index to give it added credibility. But even those who dislike cats may not be in the audience for this one--it is too mild to be amusing.