I know I've also read that some breeds naturally select to spend time with their own breed usually. Like, for example, if their was a breeding farm that bred German Shepherds and Rottweilers, more often than not the German Shepherds would socialize primarily with the German Shepherds and the Rottweilers would socialize primarily with the Rottweilers. I think I've read or heard something like that a few times. Maybe that's a dumb example though. I don't know...maybe there isn't much truth to that either. I just found all of this pretty interesting, if it's true.

"Hey! tell you're Border Collie to quit starin' at my Doberman. It's rude, and it's pissin' him off!" J/K