The Mongolian hamster, also known as the Djungarian hamster, is a small rodent native to Mongolia and surrounding regions. There are a few synonyms for this species, including the Siberian dwarf hamster and the Russian winter white dwarf hamster. These names reflect the hamster's cold weather adaptations, such as its thick fur coat and ability to hibernate. Other related species include the Campbell's dwarf hamster, the Chinese striped hamster, and the Roborovski hamster. Despite their small size, these hamsters can make great pets due to their social nature and playful personalities.