Part 1 is online here http://www.republibot.com/content/original-fiction-dog-days-part-1 and this is part 2:
Beauchamp woke up to find himself on earth, hallucinating that a dog was looking at him with the somewhat confused expression dogs sometimes get when they’re contemplating deep matters. He was disoriented, and confused, flat on his back, but he had to be on earth because the gravity was much heavier than on Mars, and he could smell plants in the air. How the hell did I get back here?, he wondered, how long have I been out? What…oh, yeah, the aliens in the dome…what the hell?