What is the theme and genre of Ratburger?

"Ratburger" by David Walliams is primarily a children's comedy novel that explores themes of friendship, resilience, and the importance of standing up against bullies. The story follows a young girl named Zoe who, despite facing challenges at home and school, finds joy and adventure through her bond with a pet rat. The humorous and quirky narrative also touches on issues like kindness and the value of individuality. Overall, it combines elements of fantasy and humor to engage young readers while delivering meaningful messages.