If you're ever at the imdb.com site, check out their Walking Dead message board. I was there recently and it's really active, though there are tons of trolling too, lol
I wasn't sure about that either, and several people were saying that was the same group that Rick had encountered. Some were saying that Beth might have got kidnapped by some priest guy? And that the whole thing with the dog was a setup. Others were wondering if the dog was the governor, lol Daryl should have been more careful opening the door anyway.
I like the Bob character now, but I have a feeling he might get killed before the season finale. Hopefully Beth does.