Honestly, Zootopia has more mature themes and handles them better than most actual Oscar contenders I've seen. The movie floored me, it is one of Disney's best movies period. This is golden aged Pixar level quality. The film is quirky, funny, emotional, smart, layered, and gorgeous to look at. The film comes packed with a message and themes that honestly adults need to hear more than the children it's aimed at. I am hoping and praying this becomes a Disney staple that kids watch and re-watch, because it could make this world a better place for it.
Every few years you get a movie that flips a mirror on the audience, to expose their own behavior, and does it perfectly. Zootopia does just that (and the message isn't the only reason the movie is great, it's just that it is literally the driving force behind the film). And honestly, with all of the directions American politics have gone lately (especially with Trump), this movie manages to expose the hatefulness out of fear that has been driving so much of it. It has the punch of a great documentary about diversity while being an entertaining Disney film that anyone can watch and enjoy.
If you couldn't tell by now, Zootopia gets an A+ (this was way earlier in the year than I expected to give one)