So I adopted a new sow about 3 weeks ago now, the bonding is a slow process she's quite a dominant guinea pig. I have four girls all together and one of the youngest ones (who i had before the new adoption) has started barbering my eldest guinea pig again. She did this a lot as a baby but she's 5 months old now and it had stopped until last night. I am just worried it could stress my eldest guinea pig as she's had a very difficult year with her partner dying and having to be introduced to 3 new pigs. I was wondering if this behavior could be linked to my newest adoption, as she's still chasing everyone to let them know she's in charge.