Candy had an old, beat up dog that he owned since it was a pup. “He ain’t no good to you, Candy. An’ he ain’t no good to himself. Why’n’t you shoot him Candy?” Carlson said this while he was trying to convince Candy to kill the dog. Carlson didn’t like the dog because it was no good to anyone. It also states in the text, “George… reached into his side pocket and brought out Carlson’s Luger… He looked at the back of Lennie’s head, at the place where the spine and skull were joined…” George found Lennie in the brush where they slept the night before they went to the ranch. Lennie had just killed Curley’s wife and people were coming to punish him. George knew that Lennie was no good for anyone. Just like how Carlson shot Candy’s dog, George shot and killed