For the past couple of months, At least 2 days a week I see a litter of Hogs off President George Bush Freeway, you rad that right. I've watched them grow from tiny lil piglets to about a Foot tall at the shoulder. There's 2 "Full size" which I have to believe are Mom n Pop and 8 or so Chillins.
Well, I have not noticed any, but PGWBT is pretty long, LOL.
The two big ones probably are not mom and pop. Adult males do not reside with the sounder and get chased off after mating because they are a threat to the piglets. You are probably seeing two sows or maybe the sow or piglets are coming into heat and the male is there to mate (which may or may not be the original male that sired the young).