The Last of Us concept art shows Ellie's dog, other cut content
The Last of Us fans should check out a gallery of concept art on OPM which includes commentary from art director Erick Pangilinan. There are a few interesting tidbits in there, including the fact that Ellie was supposed to have an injured dog, and that in one take on the story, Joel was more active, and Tess and Ellie less so. The whole feature is a bit spoilery for those who haven't played through at least the first few hours of the game, and the final slides drops hints about the ending, so don't click through if you're concerned.