Ok I keep hearing this stuff about how you should always have dogs of opposite sex (what you do if you have three dogs is beyond me *g*)
I have had GSDs for 25 years - usually males. I have never had a problem between two males.
As a rescuer I rescue and rehab dogs - I also board occassionally.
I dont take females in because my bitch cant tolerate them - that is just her - not because she is female, but because she is a dominant female
I have had dogs and bitches board here - not a problem. Had my friends bitch here for 6 weeks - one clash at the start - nothing since!
IMO sometimes you will hve problems, but more often than not, 2 male dogs are fine and 2 females can be too!
Its when you get two dominant females that you can have problems - then again I guess two dominant males are the same



