He is gorgeous and looks happy and alert
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I am not up on dwarf hamster colourings, but as mentioned before he is most likely a hybrid of a Winter White Russian Dwarf and a Campbells Russian Dwarf. A hybrid can look like either of them but still be a hybrid with genes from both species. As M&M said their diet is important as some can be prone to diabetes so a sugar free diet would be good
![](https://www.hamstercentral.com/community/images/smilies/icon_smile.gif)
His set up looks very nice.