[Burakki]

As far as I know, whereas they do tend to live in groups in the wild, it's not always a guarantee that they will be happy in a group in a cage. As AP said, it depends on whether they'll get along and accept each other or not. In the wild, if they have a fallout, one of them can just go away and build himself a new home, but in the cage they don't have such possibility. Since they're also nocturnal, you may just not notice their fights if they fight while you're sleeping. It's best for everyone to just keep them alone.