I will chime in, and if it were strictly for Jack I apologize. More than likely not that big of a deal. Tomorrow three or four will jump the next one and so on and so on. It is just puppies establishing order. The order can/will change back and forth as they grow til separation. I would not think it is the end of the world and I doubt the pup is permanently scarred. I will agree it may be a sign to you that this group may need separation sooner than later but I would think the little female will just fine in time. EWO