My two play VERY rough and get very loud sometimes, growling, etc. Well, a couple of days ago they were playing and it escalated into a fight (hackles raised, etc). I interjected by walking over to them saying loudly "hey, settle down". I had to say it twice (I don't think they even heard me the first time) but they did and then acted like What Mom, it was no big deal...Neither had a scratch on them and it appeared to be more of a mouthing type of thing but it was a fight for sure. I know from reading that I should watch the play because sometimes it can escalate like that - has anyone else had that happen? Now I am wondering if I should have interjected like that or let them work it out. I just get so nervous due to past experiences I had when I had two females-a GD and a boxer - I am worried that one will hurt the other.