Animal Farm movie review

Of the part of the movie that I saw, the movie was vastly different than the book. For instance, in the movie, farmer Jones is excluded from the battle of the windmill by the other farmers and wants on his own to destroy the windmill and apparently died in the explosion. In the book, the plot is nothing like this. Also at the end of the movie, the animals all revolt against the pigs. This shares no correlation to either the book or the Russian revolution. I think that this was added because it was an animated movie, but I also think it defeats the entire point of the movie. Overall, the movie was 'not bad but not great' whereas the book was quite good.