When I first brought the third male home, it had long sleek black hair that trailed half an inch on the floor. Now after four months I've noticed that the hair length has reduced dramatically, and when he walks you can see his feet, wich you couldn't before. His hair is still sleek and black but it's about an inch and a half shorter. Is such a thing common or is it sign of some kind of stress? (He's being bullied by the dominant male for the past three months)