The pigs are coming around

They've mastered the art of "looking hungry", learned that we are the food, and have made a new routine of excited oinking and running around when we come with the scoop.  They even approach!  I throw the food - (OMG, run away!) they sprint around, and then saunter back to eat. They no longer try to run through the fence, but pull up an inch away.I was taking pictures through the fence and they came so close (Is that a snack?) I thought they'd touch it.  Cute!They bury themselves in the hay in their palace, sometimes ears showing, sometimes a black back, sometimes nothing.Then when we come down the trail, they burst up out of bed, look out, and emerge with straw all over their face.  Or just the ears pop up, a sentry.  Early-warning  snack detector.Once I couldn't see them at all from outside the fence, and sure they were gone, I started looking for a breach in the fence.  Then Boufff!  the hay exploded and two pig heads popped up.  I went in to fix up their bed (Run away!), but one pig couldn't resist coming back to see what I was doing in their house.  Messing up their bed, obviously. We had it perfect!They've started to tear apart the intact bales that form their windblock/bed.  It was a matter of time.  We go in and pile the hay back in bed that they've pushed out, they rearrange it again.  Long as they're cozy.  It's still cold at night.