The central element of this novella is its symbolism. This novella has plenty of symbolical forms, such as people, creed, and some of the animals. Candy has several terms of symbolism, for example his disability is a symbol of the migrant workers who are just literally forgotten about, they are forgotten when they are no use to the owners. Candy's dog is a symbol of a life only for advantage to others Lennie also for shadows this, he is belittled of his mind but enormously commented for his strength. Also he is compelled to lie about the fight he had...
Curley's wife to go or he would call the boss to Curley's wife but all she did was black mailed him by saying, "Listen, Nigger, you know what I can do if you open your trap, I could get you strung up on a tree so easy it ain't funny."

The dog is a symbol of a no more use it dies of a shot straight at the back of the head. Lennie dies the same way it is a symbol of tragedy, but also triumph because the last minutes of Lennie's life he is thinking of his dream.