They do blink, but not often. Their tears are thicker than ours so their eyes stay moist for longer without blinking. I don't have an outside run because our summer season is too short to make it worthwhile, but I do put my pigs out in a moveable pen in the summer time and have never seen them even make an attempt to dig. They pretty much just eat or snooze.
Favourite things are their cute noses and lips and how they flop on my chest when they are comfy.
When they are squeaking they are usually talking, might be "I have run out of lettuce" , "I need the loo" , "I have run out of cucumber" , " don't scratch there, higher, that's it" or "I have run out of apple" as you get to know them you will learn who wants what and the ways they will tell you. Often their conversations are food related.