This is probably a little young for the "young adult literature" genre, but I still think many would still enjoy it. It's a quick read (only 81 pages, with illustrations) and probably took me less time to read than the film would talk to watch.
It's a very cute story about a family of foxes that are being hunted by three farmers. These farmers shoot at Mr. Fox, attempt to dig up his home and stalk his fox hole. But Mr. Fox is very smart and, with a little help, he tunnels to the three farms. Mr. Fox plans on feeding his family and the other underground families by these secret tunnels.
The illustrations are really an enjoyment as well. Like I said, it's a very fast read and if you plan on seeing the film (or have seen it already), it is probably worth the time investment.
Enjoy!