The owner has been found and I feel so stupid, the dog isn't even pregnant, just really fat, lol, I don't know how much she's suppose to weigh but she seemed smaller in statue than Joey, and yet weighed so much more, and he's not exactly skinny. Turns out it was a woman's, who lived in the neighborhood, just right around the corner, and she just got home from work. Apparently, her son or his friends left a door or gate open, the woman was absolutely going out her mind, and she saw one of our flyers, in another neighbor's window. Like I said before I never had a female dog so I just assumed it was pregnant with all that weight, and the dog is over 16 years old, so I guess a little extra weight at that age isn't that bad.
I had no idea the dog was that old either, she really look great. I guess people will stop listening to my expert advice.
Joey seemed to really take to her, and I think was a little sad when she left. Thanks for all the help.