sounds a odd question, but I have looked at the barmy for boars site and I cant really find anything that says what kind of bonding behaviour is acceptable ie rumbling teeth chattering to some extent etc or what to expect when trying to bond what not to worry about and what to stop. Obviously if they have a full on fight you would stop that, but is there a warning behaviour that may indicate this will happen? Can some one who has bonded boars give some good hints and tips?