Any differences between the males and females?
The males are usually quite a bit larger than the girls are. The females tend to be more territorial, more protective, and more obedient than the guys. The males tend to try and charm their way out of trouble rather than follow the rules. :-). Of course, some lines are more territorial/protective/laid back etc than others, and each dog is an individual. How you raise and train your dog plays a large role in how they respond to any circumstance.