Don't know man?I think what happend was that my 2 Previous male Labs never seen a female before.I had thought previously that both the new Labs I had just added were males.Now that I've taken a good look at both of them,I realize now that when I added the two new ones,one of them was a female.The two old Labs were fighting my new one and each other,plus beating the piss out of the new female.They just didn't know how to act I guess??
As far as the background goes....I'm just getting into this **** man,I'm not a real pro on backgrounds..