I just got Kizzy and Lexi to be friends with Charlotte. On the first day Charlotte and Kizzy had two nasty fights, teeth and all, and a nasty scrap, we separated them and calmed them down after each one and then gave them more space and they settled down. They had a few nips in the first few days but nothing bad, just Charlotte telling Kizzy who is boss now. Charlotte was rumbling almost nonstop the first full day the new girls were here, it has been just over a week and she is still a bit rumbly but they are all quite friendly now. Girls get rumbly if they are being dominant or if they are in heat.