The Metro Toronto Zoo (Ontario, Canada - www.torontozoo.ca) has a couple of porcine species on display ... here is a quick overview, with links to find out more!
Red River Hog:
http://www.torontozoo.ca/Animals/details.asp?AnimalId=662
Warthog:
http://www.torontozoo.ca/Animals/details.asp?AnimalId=402
