Campbell’s dwarf hamsters (Phodopus campbelli) originate from Mongolia, northeast China and southern Siberia but are nowadays bred worldwide and kept as pets. They are usually more active during the day than the golden hamster which is equally popular. Adult Campbell’s hamster reach a body size of eight to ten centimetres. The small rodents feed mainly on various plant seeds and occasionally on small insects. The hamster in turn is preyed upon by raptors and steppe foxes.