The first boar I ever cared for was Cramer's boy named Sue--he was super quiet other than the occasional tussle with his cagemate. Now years later I have my boar Casanova and he is a chatterbox, literally. It's not an aggression or territorial thing with him--he literally just rumbles and chatters at *everything*. Plus plenty of wheeking at breakfast/dinner. Some pigs are just way more talkative!