The body sizes of different hamster breeds vary significantly. Here are the size data for major breeds:
Sizes of Common Pet Hamsters
Golden Hamster (Syrian Hamster)
Body length: 15–20 cm | Weight: 100–200 g
Largest pet hamster breed; females are typically larger than males.
Djungarian Hamster (Campbell's Hamster)
Body length: 8–11 cm | Weight: 30–45 g
Fur may turn white in winter; larger among dwarf hamsters.
Silver Fox Hamster
Body length: 13–16 cm (including tail) | Medium-sized breed.
Roborovski Hamster
Body length: Only 4–5 cm | Weight: 20–35 g
Smallest hamster breed in existence.
Wild Giant Hamsters
Black-Bellied Hamster
Body length: 20–34 cm (including tail) | Weight: 400–900 g
Known as the largest hamster species globally.
(Note: Actual size is influenced by genetics, diet, and housing conditions.)