Ok, I've had Harley since August 1st, but when I leave the house I still separate him from Sylvia. They never need to be separated when someone is home, but I'm still afraid to leave them together when no one is home. They play and wrestle in a friendly way, but I don't want it to go to far when no one is there to break it up. I feel like I can leave them together now. I know all dogs are different, but I was wondering how long it took some of you to leave your dogs together when no one was home. Sorry this is kind of a paranoid question