It's a good year for Pixar fans: Inside Out was one of the studio's best films in years, and we also have another to look forward to on November 25, The Good Dinosaur. Now we've got our best look at the film yet with its first official trailer, which features some of Pixar's most photorealistic CGI work yet. The basic premise: What if the asteroid that wiped out dinosaurs 65 million years ago missed Earth? And what if humans and dinos evolved alongside each other? The film centers on an Apatosaurus named Arlo who's separated from his family and befriends a young human named Spot. It's a typical Pixar subversion of the "boy and his pet dinosaur" idea -- this time, the human appears to be the pet. Pixar based the environments in the film on real locations to achieve that photorealistic look, complete with terrain data from around the world, Wired reports. The movie is reportedly low on dialog, but who needs it with imagery like this?