I know where the pup ends up- at your local shelter!!!
And hopefully it's a no-kill shelter (although there's a popular "no-kill" shelter in my area that can advertise that because if needed -illness, behaviour probs etc-, they bring the animal to the ARL to have it euthanized- that way they can call themselves "no kill") But anyway...off the topic...
Not all shelter dogs have behavior probs. In fact, from what i've gathered from talking to shelter workers, most dogs relequished to them are because "my partner has allergies", "my child has allergies", I have to move and my new landlord doesn't accept pets" (THAT'S a big one!)
Less are there for behaviour probs (but it may depend on the day your there!).
Some shelters have dogs from 9/11 and/or from Puerto Rico (? not sure- jan correct me on the country the US is trying to help with dog overpopulation!).