Hello, I have a 1.5 year old boy who doesn't have a friend and a couple of days ago I got 2 new 6 week old babies. I know they need to be 8-10 weeks old to start intros so I've kept them away from each other, but their cages are in the same room. I doubt the babies care very much but I'm worried about Bodger being frustrated hearing and smelling the other rats. I've heard of some people putting cages next to each other to start bonding but some people say that that method just frustrates the rats that they can't get to each other. Maybe this will get them used to each other before intros? Anyway my question is should I move one of their cages to a different room? Also, the babies are already coming onto my hand and sometimes climbing up my arm; are they ready to be put out into a play area or should I wait a few more days? Thanks.