What are some similes and metaphors throughout this book and what do they accomplish??

In Maus, Jews are portrayed as mice, while Germans are portrayed as cats. The metaphor of Jews as mice is taken directly from Nazi propaganda, which portrayed the Jews as a kind of vermin to be exterminated. The cat/mouse relationship is also an apt metaphor for the relationship between the Nazis and Jews: the Nazis toyed with the Jews before ultimately killing them.

The decision to portray different races as different kinds of animals has been criticized as over-simplistic and for promoting ethnic stereotypes. Beneath the simple metaphor, however, is an earnest attempt to illustrate the unyielding stratification by class and race that was very much a part of life in World War II-era Poland.