Books like Katt Vs. Dogg
James Patterson, Chris Grabenstein
Katt Vs. Dogg is 336 pages, about 6 hours 10 minutes at 250 words a minute.
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All Night Long 2.5 h 
Untwine 5.7 h 
The Lying Game 5.6 h 
Racing Hearts 2.7 h 
Best Friends 1.9 h Bar height shows length. Estimated at 250 words a minute.