It is a well-known fact that, because of the insane amounts of money involved in making a Hollywood movie, the companies are terrified of taking chances on anything at all unlike that which has made money in the past. Which explains why the dull predictability of so much Hollywood output.
However, every once in a while, a director with a record of financial success can slip something odd past all those filters. And animation is partly immune to the problem because the money people don't understand it yet and anyway they expect it to be a bit weird...
"It's a post-modernist surrealist western, set in the modern day, with Johnny Depp as a delusional chameleon on a vision quest."
I mean, the @$*#?
It's also utterly beautiful, by the way, with truly astonishing creature designs and the most gorgeous landscapes I've ever seen in a computer-animated movie (which is saying something for a field which has let quite so many skilled artists have quite so much fun in the last ten years). It seemed that, every time the plot started becoming predictable or conventional (which it does from time to time), the animators were instructed to make the pictures on the screen even more breath-taking. And it's frequently utterly hilarious. I'm just glad that I didn't have to explain it to a ten-year-old being taken along to see a funny-animals movie on a wet Saturday afternoon.