The size of dwarf hamsters varies by breed. Common dwarf hamsters typically measure 4–12 centimeters in length and weigh around 20–70 grams. Below are specific size details for each breed:
Roborovski Dwarf Hamster
As the smallest breed of dwarf hamster, they usually only reach 4–5 centimeters in length and weigh about 20 grams, with an extremely tiny overall build.
Campbell’s Dwarf Hamster
They range from 7–11 centimeters in length and weigh 30–60 grams, boasting a relatively moderate size.
Winter White Dwarf Hamster (Djungarian Hamster)
They measure approximately 6–10 centimeters in length. Their fur turns completely white in winter, while in non-winter seasons, it’s mostly gray or light brown with three distinct black stripes along the back.
Russian Campbell’s Dwarf Hamster Variants ("Grandpa" and "Grandma" Types)
Including the "Grandpa" and "Grandma" varieties, they are 4–6 centimeters long and weigh 20–35 grams, making them one of the smallest types of dwarf hamsters.