Teak was an obstacle at every turn for Luke, and even killed him in the training grounds if you weren't careful. Teak had an intense hatred for anyone who was not a canine, so all his hatred got directed towards Luke, making his life a living hell. Max, Rune and Burry never intervened between the two because of a misunderstanding involving Alon and Luke, and thought that Luke had everything under control, which he did not.