I left Rocky and Rumor totally alone with the big guys on the 12th day. They had been around the big guys quite a bit by that time so hubby convinced me to leave them all out together for what I thought would be 3-4 hours and it ended up being 9-10 hours but they all did fine.

You just have to wait until you feel sure that there will be no harmful fighting. Now the main things I worry about when I leave are Rumor chewing on an electrical cord - she's a big time chewer - or Ripley getting upset and spraying in the house.