*Adult Roborovskii hamsters usually grow to approximately 5cm in length and are the smallest common type of hamster. The standard colour is a sandy brown coat on their head and back and a white colour on its belly. They also have white "eyebrows". | *Adult Roborovskii hamsters usually grow to approximately 5cm in length and are the smallest common type of hamster. The standard colour is a sandy brown coat on their head and back and a white colour on its belly. They also have white "eyebrows". |