Some of these pictures and descriptions may give away plot details that you might not want to know before watching the film.
Rango is a pet Chameleon in a glass cage who performs plays he writes with doll parts and dead crickets and his plastic palm tree. One day the cage suddenly flies out of the back of his owner's car and Rango becomes lost in the Mojave Desert. He takes on the name "Rango" and becomes Sheriff. He is forced to confront the notorious gunfighter "Rattlesnake Jake" when he comes back to town. Rattlesnake Jake is a computer-animated Western Diamond-backed Rattlesnake with a bandoleer full of bullets wrapped around his body, a machine gun for a rattle (that makes nice metallic rattling sounds) and he has authentic-looking scales and markings. He's supposed to be the scarey bad guy in the movie - when he first meets Rango, he fills a glass full of venom from one of his fangs to intimidate him. I look forward to his own movie.