My neighbors got a pot bellied pig a few nights ago and he prefers to spend him time with my horses then in thier yard. (He keeps getting loose) I'm OK with it, he seems sweet enough, young, I'm guessing under a year but about the size of a medium dog. He is cautious or nervous of the horses and does a little lip, teeth smacking thing when ever they put their noses down to sniff him. He does it when I'm petting him too. Is this a form of aggression or fear? I have NO CLUE what to feed him. I think he is going back to the neighbors for breakfast but I'm afraid it's not enough. I tried feeding him carrots and peppers but he wouldn't even look at them. I tried some chicken scratch (just corn really) and even a bit of the horses pellets but he doesn't want anything to do with that either. He seems to be munching a little on the hay and definitely roots around all day long. Finally, he is out doors only but it's going to get down into the 40's in the next few days. Do I need to bring him inside? I think the neighbors have just decided he's our pig now.