What types of hamsters can live together safely without fighting?

If your hamsters initially did not get along I probably would not try to put them back together again. Also, if you cage an male and female together they will mate and you may have many liters of babies to take care of. You may be able to get them together on ‘neutral ground’, somewhere outside of either of their cages so they won’t feel territorial of the space. I hope this helps. Thanks for using Petco Pet Education Center, formerly Petcoach. Best of luck.

Unfortunately yes, it can be very common for hamsters that are housed together to start fighting. This can occur even if the hamsters have always been together. I would recommend keeping them separated for a couple days and then trying to re-introduce them again like you did last night. Hopefully they will be able to get along with each other in the long run. If not, to keep them safe, you'll have to keep them separated. I hope this helps. Thanks for using Petco Pet Education Center, formerly Petcoach. Best of luck.

It depends on the hamesters. Not all hamsters will get along. It is also important that you do not put male and female together unless you want babies or one is spayed/neutered. If you are going to try you need to monitor them closely and I would not leave them together over night. If they are doing well you can leave them together for longer periods of time. Some hamsters will have aggression when put together. Hope that helps

Thank you for using Petco Pet Education Center, formerly Petcoach! It is definitely a good idea to separate your hamsters to avoid fighting. While a running wheel or ball are great activities it doesn’t necessarily meet a hamster’s normal behavior to burrow. I recommend providing plenty of nesting material in both cages. You can also provide various tubes that encourage further burrowing or huts that allow for hiding and establishing a territory. I hope this helps and am happy to answer any other questions you have!

Thank you for your question. Unfortunately if the hamsters were not raised together, it is not likely that they will get along and very possible they will fight and injure eachother. I would be nervous that you are not able to watch them at all times and they could fight and hurt one-another. https://www.petco.com/content/petco/PetcoStore/en_US/pet-services/resource-center/caresheets/dwarf-hamster.html

There is a good chance that 2 adult male hamsters will fight and induce significant injuries. If you would like to try to introduce them to each other regardless, I would start with a completely clean cage with fresh bedding and keep them on either side of a mesh divider so that they can see and smell each other without being able to fight. I do not recommend putting one into the other’s cage as the original hamster will likely become extremely territorial. For 2 weeks or so, you can remove the mesh divider for short periods of time while you are carefully monitoring them and offering plenty of enrichment in the form of shelters, toys, food treats to keep them occupied. If you notice any aggression, I would give up and keep them separate from then on. If after several supervised periods alone (about 30 min each time) over 2 week you do not notice any signs of aggression, you may remove the mesh divider but examine them carefully each day for scabs/wounds especially on the rumps, genital area, hind legs. Good luck! They are very cute!

Thanks for reaching out. Contact a local pet store (Petco, Petsmart, other) or a humane society, for possible relinquishment, if babies are weaned and eating on their own. Separation into smaller groups might help in the short term, but you need many cages. Good luck.