Because everyone in the room wanted to get rid of the dog.
Carlson's solution to the problem of Candy's old dog in "Of Mice and Men" is to shoot the dog to put it out of its misery. He believes that the dog is suffering and that it's the most humane thing to do. Candy eventually agrees to let Carlson shoot his dog.
Carlson says that Candy's dog is old, stinking, and no longer useful on the ranch. He convinces Candy to let him shoot the dog to put it out of its misery, as it is suffering. This event foreshadows the theme of the weak being marginalized in society.
Carlson makes the final decision to shoot Candy's old dog in "Of Mice and Men." He argues that the dog is suffering and that it would be more merciful to put it out of its misery. Candy eventually agrees to let Carlson shoot the dog.
Carlson shoots Candy's dog because the dog is old, sick, and suffering. Carlson believes that it would be more humane to put the dog out of its misery rather than let it continue to suffer. Candy is hesitant to do it himself, so Carlson takes it upon himself to shoot the dog.
Slim agrees with Carlson because he understands the practicality of putting down Candy's old dog, as it was suffering and there was no hope of recovery. Despite feeling sympathy for Candy, Slim recognizes the necessity of ending the dog's pain for its own sake.
A ranch worker who convinces candy to let him kill his dog because the dog is not worthless and in pain.
In Chapter 2 of "Of Mice and Men," the conflict between Slim and Candy arises when Slim suggests that Candy should let his old dog be put down because it is no longer useful. Candy is attached to the dog and doesn't want to let go, while Slim argues that it would be more humane to end its suffering. They ultimately agree to have Carlson shoot the dog.
Slim advised Candy to let him shoot his dog because the dog was old, suffering, and unable to do its job. Slim knew it was a difficult decision for Candy, but ultimately it was an act of mercy to end the dog's suffering.
Candy felt a mixture of devastation and resignation when Carlson shot his dog. He was attached to the dog as a constant companion and source of comfort, but he reluctantly agreed to let Carlson do it as he knew the dog was suffering and old. Candy felt powerless in the situation, unable to stand up for his friend and facing the harsh reality of ranch life.
In Chapter 3 of "Of Mice and Men," Candy's dog is shot and killed by Carlson. Candy is deeply upset by the loss of his beloved companion but ultimately agrees to let Carlson put the dog out of its misery due to its old age and failing health. This event foreshadows Lennie's fate at the end of the novella.
Candy regrets not putting his dog out of its misery himself, as he let Carlson shoot it instead. He also regrets not joining George and Lennie in purchasing their dream farm, as he realizes he will soon be old and useless on the ranch.
Candy mentions that he should have shot his own dog as a way of acknowledging the harsh reality of old age and uselessness. He sees parallels between his dog's situation and his own future, where he will outlive his usefulness on the ranch and be disposed of just like his dog. It highlights the theme of loneliness and abandonment in the novel.