Men with round faces are more aggressive.
You don't think I would make something like that up, now?
The male sex hormone testosterone makes faces more circular and now scientists have studied whether this characteristic is also linked to behaviour.
The shape of the face may have been honed by evolution to mark a man likely to be aggressive
A Canadian team studied 90 ice hockey players and found the rounder the face, the more aggressive the players.
For male varsity and professional hockey players, the facial ratio was linked in a statistically significant way with the number of penalty minutes per game, report Justin Carre and Prof Cheryl McCormick of Brock University, Ontario. [More]
Wait - there are non-aggressive hockey players?