Hello, about a month and a half ago, I got two roborovski hamsters, pet store said they’re litter mates, were the last of what was six in the batch and are two, roughly 4 week old boys. Meet Vinnie and Jeice! Vinnie is the bigger white one and Jeice has the back stripe. I initially started with a smaller cage, suitable for two baby dwarves, untill recently they’ve grown a lot and now, I’ve heard the horrible screech no hamster owner wants to hear and have had to break up two fights. Jeice has a scratch on his right hind leg that didn’t bleed but did get through his skin and a nip on the ear. Vinnie being the bigger and scrappier one, is completely unharmed and in my guess, the agressor. Now I’ve read a lot on these forums and I know what most people will say, so I please ask of you - try and give any possible suggestion BEFORE full separation. It's very important to me they get along together, though if there’s more threat, I will separate them, but that is the last of the last resorts in my mind. I have a lot of spare time and they’re always right next to me in the room, so I’m around to observe and intervene. Now what I’ve done - I’ve broke up both fights and separated the agressor, cause I saw Jeices injuries straight away. Then I re itroduced them the next day and all was well for a few days, then Jeice got the nip on his ear. Now since that moment, I once again separated them, then put them both together in my bathtub, while I set up a new cage. I boiled all their wood toys, plastic houses, got rid of all scents, got a brand new cage and filled it with fresh medium. The previous cage had two levels and one of everything necessary and was around 300 sq inches, this ones 500 and has two of everything they need. They’ve been in the new cage and I have been watching them closely. There are no arguments, a lot of sniffing, what looks like kisses and they’ve not left each others side. So now I’m really confused. They fight nasty, but still want to play together, cuddle up, sleep together, mess about on the same wheel and everything. Do you guys think the larger cage and less to share will prevent the fighting? They don’t seem to avoid each other. I’ll include a few pictures and videos of behaviour and setup, I’ve read up on some body language, but a lot of it escapes me, if you guys have any pointers to help make this work, I’d be most grateful! EDIT: the reason I point at the middle of the cage in the end, is because i have two pieces of carboard, burried, between which I can put a plastic wall to separate two halves of the cage. I cut audio cause it was in a foreign language anyway.