Mark Bowler / Campbell's Russian dwarf hamster (Phodopus campbelli) opal colour form

Mark Bowler / Campbell's Russian dwarf hamster Phodopus campbelli

Joel Sartore / Photo Ark / Campbell's hamster (Phodopus campbelli crepidatus) portrait, Plzen Zoo. Captive, occurs in Siberia.

Roland Seitre / Campbell's dwarf hamster (Phodopus campbelli) eating, portrait, China. Captive.

Roland Seitre / Campbell's dwarf hamster (Phodopus campbelli) resting, portrait, China. Captive.