Size is the most observable difference between Syrian and Dwarf Hamsters. Syrian Hamsters can reach 8 inches in length, whereas Dwarf Hamsters rarely grow beyond 4 inches. Syrians are unsociable, and Dwarfs can live in small groups. Dwarfs are more active than Syrians, and unlike Syrians, they turn wild if neglected. For Syrians, more color variations are admissible than for Dwarfs.