I'm not an expert, but I'm going to guess that since they have that pig in their house and their house doesn't appear to be on a farm, then that pig is probably a pot bellied pig. They only get to be about the size of a small/medium dog (though they will weigh as much as a human!).

A farm pig? Over 1000 lbs...not something to consider a 'pet'.

I've heard amazing stories about pigs which is exactly why we will not raise them. In my mind, they are way too intelligent a being to be raised and slaughtered for meat. I couldn't do it. Hell, I'm having a hard enough time thinking about eventually probably having to off a chicken...and they are stupid creatures!