That's why when you approach them and apply that visual pressure the intent is to get the pig to move away from you without actually fleeing out of fear.
That's one of the biggest challenges with using the motivation of the fear response, is not to invoke full fear in them but more get them to move as a cautionary movement of them.
It's just like, you know what, she's a little too close to me so I'm going to turn and I'm going move away.It'll just make me feel safer.They don't like being crowded, they don't like being moved in big groups, they don't like you right in their face, they don't like being forced or pushed.
They really want to believe it's their idea so, give them an area to go, open it up let them see that there is a way for them to escape and move forward and make them feel safer.
Woods says usually the animals are doing exactly what we are telling them to do according to where we are standing, to our body language, to how we're reacting to them and it can be very frustrating for handlers if they don't understand that.
Source : Farmscape.ca