What are the key themes of the toy story movies?

Quick Answer
Toy Story 3 explores loyalty, growing up, change, and identity, as Andy prepares for college and the toys confront where their loyalties lie.
Explanation
Toy Story 3 follows Andy Davis as he faces the transition to college, a moment that marks a significant change in his life. The film depicts the toys, led by Woody and Buzz Lightyear, being accidentally donated to a daycare center, forcing them to decide where their loyalties will lie. This narrative highlights the theme of loyalty, as the toys must choose whether to remain faithful to Andy or adapt to a new environment. The story also addresses the process of growing up, with Andy’s departure symbolizing the end of one chapter and the beginning of another. Themes of change and identity emerge as the toys wrestle with their roles and relationships in a new setting, ultimately underscoring how identity can evolve in response to life’s transitions.