That's 385kg, give or take. It's close to the weight of a piano. On a wild animal with a huge mouth full of sharp teeth and the ability to break through wired cages when agitated. But yeah, sounds very likely.
The team of pitbulls probably held the boar at bay while the guy jumped on it's back and stabbed at its jugular, until it bleed out.
When I was 13 & 14 I worked on a diary farm. A pregnant cow was dying while giving birth (or something along those lines) and it had to be put down. For whatever reason the farmer I worked for didn't have any guns available so he took a butcher's knife and tried to cut the cows jugular vein. The knife wouldnt actually cut through the cows skin so after a while he tried to stab to the cow in the neck. I remember the first jab ricocheted off, the knife and his hand bounced right off almost like a basketball off the floor.
He eventually stabbed through the neck and the cow was put down but I'll never forget how it was nearly impossible to stab through that hide (The farmers brother showed up hours later with a shotgun but by that time a butcher had been called and he had skinned the cow with tiny filet knifes, he did it so quickly and easily, it was the craziest thing I had ever seen).
That said from that point on I've always laugh when I hear people talk about killing wild game with a knife. That cow put up ZERO resistance and it still wasn't killed easily. I literally couldn't even fathom trapping an animal with a thick hide like a feral boar and taking it down with a knife.
