It also depends on the breed of hamsters. Usually the tiny ones, Russian dwarfs are ok granted the cage is big enough and you have 2s of everything. Same litter babies are also easier to keep and no 2 males together. Syrians, the bigger ones do not go well together in any situation one they meet maturity
I already two male cage they dont fight
Yes, provided the cage has enough room. I would not pair two male hamsters.
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