My family and I, have an eight month australian shepherd puppy,Tahoe, that we got from a breeder. Upon serious consideration we decided to adopt another dog. We recently adopted a yellow lab, Reno, from the local spca. He is believed to be between 1 and two. Upon bringing him home we noticed that he was dominat over her. He is not neutered but will be on monday. My biggest concern is his "rough play". It almost seems as the dog is trying to lineback tackle Tahoe. We also noticed that when she submits to him he continues to bite her. There is no agression, there is definitely no growling, or snarling. I just don't know what to do, I always break up the rough play but it is exhausting having to watch the two play and jumping in the middle when I think things are too rough. Any suggestions?