This is a "domesticated" chancho. He actually was extremely playful, smart and a prankster. He'd often go an nip at the heels of grazing horses just to piss them off and then go wildly running away. When I was doing yardwork in the same area, he'd grab my abandoned jacket and run away with it... me flailing my arms chasing after him. He, however, lost his sense of humour significantly the day they castrated him. ...Poor bugger.