Hamsters may squeal and chase each other at first as they establish a hierarchy, but this is normally just temporary and involves little physical conflict. If the fighting appears severe or lasts for more than a few days then they will need to be separated. Otherwise is it best not to intervene.
Unfortunately, their smaller size, as well as their speed and agility, mean they are slightly harder to handle than Syrian hamsters and so less suitable for young children.
There are three different species of dwarf hamster. These are the Campbell’s Russian dwarf hamster, the Winter White Russian dwarf hamster and the Roborovski dwarf hamster.