each dog is different so were mine pestered yours might not 🙂 sorry if im not making sence
you do need to stop excluding him though as that could leed to problems later, remember you havent had her long give her time and she will find her feet 🙂
if you need to seperate them then do so but put juno in a different part of the room.
when he went for her how was he?
did he shake her like a ragdoll (so to speak) or was she just pinned to the floor?
what was his body position like?
was his tail wagging, out straight or down low?
sorry for all the questions but im just trying to get an idea of how it was and im sure bev would want to know aswell ;D