OK...I am not sure where in Philly you are, but go to
www.petfinder.com.
There are some listed from rescues that are for other animals. There is a listing for
http://www.petfinder.org/shelters/NJ231.html. Looks like a cat reescue but they have some pigs listed.
OK...there are quite a few listed here
http://www.pennickconsulting.com/lflsite/Adoptables.htm
and here
http://www.petfinder.com/shelters/NJ250.html
So...I am not sure if any of these are close to you, but I am sure you can find something. Try all the animal shelters. Call around. I know Philly is not that big, or PA for that matter. You may even be able to work something out where you can meet half way or something.