@justforthelulz Unfortunately no, they're territorial. Sometimes they'll attack, kill and eat another hamster in the cage to defend what they feel is "their" territory. Some breeds are worse than others about it.
@manabi
Yep, if I had raised two hamsters as a kid, only to come home one day to see the blood-stained victor tearing into the loser's corpse, I, too, would be traumatized.