Chances are you've heard the expression " Happy as a pig in $#%%" . I changed the last word to symbols so as not to offend. The expression is one that is used a lot here in the South. It simply  means that the individual being referred to is about as pleased one can possibly be.

This is Oliver Piggy. He has his own You Tube Channel and if you like watching pigs, Oliver is a good pig to watch. This particular video spotlights Oliver on a really good day. What he is doing is called " the zoomies". I have noticed many other animals do this same kind of behavior when they are feeling good too. They seem to run around with no particular rhyme nor reason. It's fun to watch unless the animal in question is in your living room and you have a lot of breakable items.