In this scene Lennie is talking about how pretty he thinks Curley's wife is. Curley's wifes red dress represents Lennie's temptation. This shows that The theme temptation can be anywhere.
Ch. 6 Pg 99
In this scene Crooks is telling Lennie that his ream wont come true. This represents foreshadowing of the end of the book where there dream doesn't come true. The theme of this scene is that some people know from experience the difficulty of some dreams.
In this scene Lennie kill his new puppy. This symbolizes Lennie killing his, George, and Candys dream. This shows that one mistake can destroy several peoples dreams.
This is the scene of a crane eating a snake right before Geroge kills Lennie. The snake in this scenario symbolizes temptation and also it represents Lennie while the crane represents George. The theme of this is that giving into too much temptation can ruin many lives.