I found an abandoned village and repaired the walls on the 4 buildings. There were a lot of boar in the area so I knew it was just a matter of time before a 2 star boar spawned. I killed off all the boar in the area, after which a 1 star boar spawned. I agroed it to chase me into one of the buildings and began the taming process on it. I then went out after leaving food for it, and killed all the regular boars in the area. Basically one only needs to be within visual range of an animal for the acclimation process to advance. It is not necessary to actually be able to see it, one just has to be in the zone. While taming the 1 star, a 2 star boar spawned which I kited into another building and began the taming process on that one.

After they were tamed and I had a decent size singular of boars, I let them roam the meadow area freely. The raid event "Eikthyr Rallies the Creatures of the Forest" happened. Wild boar will not attack tame boar and vice versa, so the only threat to my livestock were the necks. The necks managed to kill 2 of my one star boars, but my 2 star boar were unscathed. 2 star boar can easily kill regular necks, Greylings & deer. Even the 1 star boar almost always come out the winners in battles against those foes, but regular boars die nearly every time.