1. Empathy and Gentleness: Lennie has a gentle and caring nature, which aligns well with the delicate and vulnerable nature of rabbits and mice. He feels a sense of empathy towards these creatures and derives pleasure from taking care of them.
2. Need for Nurturing: Lennie's childhood was marked by neglect and loneliness. He lacks the nurturing and affection that he craves. By caring for rabbits and mice, Lennie finds an outlet for his nurturing instincts and feels responsible and needed.
3. Sense of Control: Lennie often struggles to control his own strength and impulses. When tending to rabbits and mice, he experiences a sense of control and accomplishment. These small creatures are gentle enough for him to handle without causing harm, giving him a sense of mastery and power.
4. Innocence and Simplicity: Rabbits and mice represent innocence and simplicity. Lennie, with his childlike nature and limited intellectual capacity, relates to these qualities. He finds solace in their uncomplicated lives and purity.
5. Projection and Dreams: Lennie harbors a dream of owning a small farm with George, where they will raise rabbits and live a peaceful life. His affection for these animals is tied to his larger aspirations for security, companionship, and a sense of belonging.
It's important to note that Lennie's attachment to rabbits and mice also signifies his limitations and vulnerabilities. His inability to control his actions around these animals foreshadows the tragic events that unfold in the novella, highlighting his need for guidance and support.