In Sweden they had wildboars inside a large fenced area. The big one on the picture weighted 270 kg. (about 550 lb. I think) and he was fast as a bullet. The owner, Gunnar Kjellin asked for fun if we should have a contest: "We'll run across the fenced area and the one who GETS over has won"... :-)
Ulv, the dachs Lucas and wildboars
Gunnar often fed the wildboars with what was left of roe-deers and mooses. The wildboars preferred this over fruit and ordinary pig food. I think it's the same in the wild.
If, for example a roe-deer was killed by a car in the area, he gave it to the wildboars and it was gone in 15 minutes...
A wildboar with a roe-deer
On two occasions some of the wildboars ran away...
Gunnar asked if I would send Ulv after them to get them back. I said yes (with mixed feelings!) and ordered Ulv to get them back. It was a wild run, but in short time Ulv had chased the wildboars back inside.
Ulv is herding the wildboars back inside
The wildboars are extremly fast. We've hunted wild wildboars a couple of seasons in Poland and know what they are capable of - and wildboar herding is probably a little dangerous - on one occasion one of them turned back against Ulv for a counter attack. But it ended well. (After the herding, Gunnar asked if he could buy Ulv)