John Steinbeck's novella Of Mice and Men depicts the rise and fall the dreams of migrant workers. Slim, the expert jerk-line skinner, is looked up to by all of the workers. He is regarded as intelligent, respected, and perceptive.
Since the life of the rancher tended to be lonely, with workers moving in and out of the bunkhouse, most did not become attached to or reach out to other workers. Slim seems to be the exception to the rule.
At one point in the text, Slim reaches out to George in order to find out who he really is. At another point, Slim gives one of his dog's puppies to Lennie (because he knows it will make him happy). Slim is not only kind to humans, he is kind (in a sense) to animals. Although the putting down of Candy's dog and four of his dog's puppies may seem unkind, Slim knows that it is what is best for all of the animals. If the animals would not have been put down, all of the animals would have suffered needlessly. One final time where readers can see Slim's kindness is when he reaches out to George after George shoots Lennie.