No, Hamsters are Solitary Animals
Detailed Analysis
The Inherent Solitary Nature and Territorial Awareness
In their natural environment, most hamsters lead a solitary life and possess a strong sense of territoriality. Except during the breeding season, they dig their own burrows to live in as a means to avoid predators. When same-sex individuals encounter each other, they often engage in fierce battles over territory, which can even lead to death. For example, Syrian hamsters (Golden Syrian Hamsters) are particularly aggressive.
The Special Nature of Their Social Needs
Exceptions in Some Breeds: Only Roborovski hamsters (Robo Hamsters/Female Robo Hamsters) may coexist peacefully in small groups, but they need to be raised together from a young age and provided with sufficient space.
Interaction with Humans: The "social interaction" of hamsters is mainly achieved through their owners, such as through petting or feeding, rather than relying on their own kind.
The Risks of Cohabitation in the Same Cage
Forcing hamsters to live in groups can lead to uncontrolled reproduction (the gestation period of female hamsters is only 16 to 22 days, and each litter can produce multiple offspring) or cannibalism among the same species. In most cases, hamsters in the same cage will get injured or die due to competing for resources (such as food, running wheels, etc.).
Support from Authoritative Taxonomy
In biological classification, the species within the subfamily Cricetinae (hamsters) generally adapt to a solitary lifestyle. Their burrow structures are complex but are only used by individuals, and they will store a large amount of food (up to 90 kilograms) to survive independently.
Conclusion: Unless there is a breeding plan or you are raising a specific breed (such as Roborovski hamsters), it is highly recommended to keep hamsters separately to ensure their health and safety.