Yes, I do love this picture book. Jon Klassen is amazing. 
 In this little adorable picture book a small fish steals a much bigger fish's hat! And the small fish thinks he can get away with stealing. 
 But, in the end... (view spoiler)[The big fish kills the little fish. (hide spoiler)] 
 That's what I really like about Jon Klassen. He writes and draws these adorable picture books, like I Want My Hat Back. 
 And they both end the same, which is what I really, really like about them. This is the cutest picture book I have seen and I feel that it would be wonderful for a storytime kind of thing. (Like at your library, ect.) Jon Klassen needs to keep up the good work! 
 And also, the bad (In rating, the reviews themselves were fine.) reviews. Like the one saying that their child gets scared from this book... Just because one children doesn't enjoy it - and because of a silly reason - doesn't mean no one can ever read it. 
 And, the other book 'I want My Hat Back', I would say wasn't as enjoyable as this one. This one is cute, and the ending is the special thing about it, just because you can see it coming doesn't mean this book is awful. It's a children's picture book, what do you think will happen?! It isn't going to be deep, children these days wouldn't understand, you want them to smile! Laugh! Not think deep thoughts or be like "Duh, I don't understand..." 
 Please read this book to your children or read it yourself and think, this is a children's picture book NOT A DEEP THOUGHTFUL NOVEL! 
 So, enjoy this short and sweet fish in This is Not My Hat! And remember not to steal tiny wittle hats from big bad fish, or you might be eaten!