Experiments to examine if Japanese people process animal sounds in the left hemisphere predominantly unlike Westerners as suggested by Tsunoda were conducted cross-culturally. Spoken digits were paired with white noise and presented dichotically to native Japanese and native English speakers in the first experiment to assure the propriety of using digits spoken as common language. The recognition of speech did not differ between both groups of subject and no sex differences were found. In the second experiment, animal sounds instead of white noise and spoken speech were presented and examined interference effects of animal sounds. Any differences were found in the performances of both groups of subjects. 'This suggests that Japanese people recognized animal sounds in the same manner as Westerners do. Males showed poor performances compared to that of females. This suggests strong interference effects of animal sounds for males. Possible explanation in terms of differential neural functioning between both sexes were discussed.