Recalling that Soseki was heavily influenced by Edo culture, it seems that the above depictions in "I Am a Cat" were in keeping with a certain stereotype that existed in Edo (Tokyo).
漱石が江戸文化の影響を色濃く受けていた事を想起すれば、『猫』での描写は、江戸・東京におけるある種のステレオタイプにのっとったものだったろう。