This was a rather surprising movie. It's unlike any other modern animated movie and picks a new sort of approach, that should work entertaining for both adults and kids.
I do admit though that I was a bit surprised to see how horror orientated this movie was. Make no mistake about it, this is a horror movie. It might be a bit frightening for some children but obviously most shall be perfectly capable of handling it. Fantasy and movies can be a great outlet and also stimulant for children's imagination, this also includes horror orientated stuff. After all, most kids are of course perfectly capable of making a distinction between real stuff and fantasy.
And I do applaud this movie for not being overly fluffy or careful and protective toward children. Not that that this is being a completely dark, or scary, depressing movie to watch but overall it's being a tad bit more dark and daring than just an average animated movie.
It's also a movie with a great underlying message in it, that tells you it's OK to be different and there is nothing weird or wrong about it and you shouldn't just judge a book on its cover. It's still too bad this message was lost on some people and I'm talking about those who had a problem with its ending. It was perfectly suitable and fitted perfectly into what this entire movie was trying to tell you for the first hour and a half.
A surprisingly good movie in about every regard, that above all things is being perfectly fun and entertaining to watch!