I have tamed several pigs on different world and noticed something odd. The normal no star pigs can be tamed and act as normal in the pen that I built but the pigs that have 1 or 2 stars will move as if they are frightened and try to path back to their spawn point. I do not have fire anywhere withing 200 meters and their are no enemies, they are not showing the indicator that they are alarmed. Is anyone else having this issue?

As an aside, when did they make it so the harpoon does not work on pigs to move them from one location to another? I mean it was not an ideal solution but it worked, please Iron Gate give us a way to transport livestock from where we tamed it back to our base. I mean a simple rope we can attach to make them follow would be amazing.