I was surprised by how much my 5-y-o son LOVES this book. He wants us to read it over and over, and really "got" the concept and lately he isn't arguing at every single 'no" in his otherwise good life but sometimes actually says "okay, mommy!" and moves onto the next subject , smiling a knowing smile (if only all us adults had a book for us about how to take "no" so well). even better, he seems to "get" in a new way that there's a "good" way and a not-so-good way to disagree with others. it is an entertaining and cute book and i think frankly he likes it not for any embedded lessons but really because it's a cute story and appealing to a 5-y-o brain and humor. i rarely do reviews but wanted to take the time to highly recommend this book to others b/c it is very simple but a surprising little jewel.