To an extent, yes. The Dog was NEVER useful, and in fact generally served to get in the way or break the flow by making me follow him across hill and dale just to dig up some trash (( just KNEW that the next time I'd find something epic). That said, thanks mostly to the sheer amount of time you spend with the dog, it seems difficult to not grow a little attached. I was annoyed at the fate of the dog to the point that my final choice in the game was altered because of it - so that has to count for something.