The food preference of hamsters, Cricetus cricetus (Linnaeus, 1758), was investigated in summer and autumn by the method of stomach analysis. In summer green parts of wheat, rape and clover, as well as seeds of poppy and invertebrates, dominate in the food of hamsters. In autumn hamsters eat mainly clover, potatoe tubers, invertebrates and wheat corn. Moreover, consumption and utilization of concentrated foods (seeds of oat, wheat, corn, and Vicia faba minor), and bulky foods (green wheat, beetroot, alfalfa) was determined. The digessted energy ranged from 56 to 91%, and metabolizable energy from 50 to 79