Hello everyone, my husband and i just bought 2 new female guinea pigs from the pet shop 6 days ago. A black one namef petunia who is about 2 and a half months old and a white one named squeakers that is about 1 and a half months old. As new guinea pig owners we are very eager to make sure they are happy and getting a long. Petunia has been making a loud purring sound that we arent sure is meaning contentment or if she is rumble strutting. During this time she will move a little but not much. They also run around the cage alot and we are not sure if they are chasing each other or playing, squeakers will make lots of noise but they will both be popcorning and will stop for food or drinks. Often times during a break petunia will start rumbling. Is this happy behavior or domance/aggresive behavior? They both get their fare share of food and cuddles but they havent been introduced to floor time yet because we dont yet have a quarentined area where they cant get away. Any information would be great we just want them to be happy and healthy. Thanks