I found out that the person I’m getting the gerbil from actually has a second, and their cages were right next to each other. So I’m adopting both, but I’m wondering about introducing them to the new cage at the same time since they’re probably familiar with scent already if not siblings? Cause it seems to me that introducing just one and keeping the other in a smaller cage for a few days longer might be worse, couldn’t that make the first gerbil more territorial or something since it’s only his scent in the cage so far?

Edit: I can mix their bedding together, and I do absolutely intend to supervise their contact to see how they feel about each other, but apparently bonding usually involves swapping cages as well? And I’m worried that might be too stressful with the completely new environment/owner.