Of Mice and Men Section 3

I saw a lot of foreshadowing and symbolism in Section 3. According to page 39 and page 44, Steinbeck used the word "proudly" both when George was talking about Lennie and Candy is talking about his old dog, that obviously shows that Candy's old dog symbolize Lennie. When Carlson claims that he is going to kill Candy's old dog for him because his dog is too old and smelly, he thought that if Candy's dog stays alive, it is no good for both him self and everyone else, I am supersized that Slim actually agrees with him, I thought he is really nice, however, he agrees is still because he think that Candy's dog is living in pain right now because he is too old and he can't take care of him self, it is the same thing as Slim drown four of his puppies because he don't want them to starve to death, it is the same, Slim drown them because he love them, Candy agrees to let Carlson kill his dog is also because he love him, he don't want him to live in pain anymore. I have a bad feeling that Carlson or the boss might kill Lennie too because he brings too much trouble, but they didn't want to kill him because they love him, they might just want to get rid of him, and Lennie didn't seems to live in very much pain, he is young and strong, he still can be really useful to the ranch if he listen to them. Will the boss or Carlson try to kill him next? When Candy hear about Lennie and George's dream, he asked to join, George agree to let him join, but he don't want him to tall anybody about it. "When Candy spoke they both jumped as though they  had been caught doing something reprehensible." "George said quickly'Don't tell nobody about it. Just us three and nobody else. The be able to can us so we can't make no stake. Just go on like we was gonna buck barley the rest of our lives, then all of a sudden some day we'll go get our pay and cram outta here." I think they don't want people to know about their dream is that they want to recluse (ding!) from ranch and city, they don't want anyone to give them trouble or to stop them. From the fight, I see two sides, one side is Slam, Carlson, Candy, Lennie and George; another side is Curley and his wife. Will they fight again? What will happen to them? Will their dream come true?