Smallest breed of domestic hamster
- Who
- Roborovski Hamster
- What
- 4–5 centimetre(s)
- Where
- United Kingdom
- When
- 28 October 2003
The world's smallest breed of domestic hamster is the Roborovski hamster (Phodopus roborovskii), which typically grows to a length of 4–5 cm (1.5–2 in). These hamsters originate from Mongolia and northern China.