This is a fabulous concept for a book, and in execution it's cute a lot of the time. Maybe even most of the time. But some of the humor comes off as trying a little bit too hard, stretching a little too much. The text could stand to be a little less clinical and a little more whimsical (to match the kitty-cat theme) and, if handled skillfully, would not lose any of its truthfulness... and would actually wind up being much more memorable. 
 It's not a bad book, but I was disappointed. In the age of LOLcats, it doesn't hold up very well for me.