The film was directed by Jimmy Hayward and Steve Martino (in their feature directorial debuts), from a screenplay written by the writing team of Cinco Paul and Ken Daurio. It stars the voices of Jim Carrey and Steve Carell as Horton the Elephant and Mayor Ned McDodd, respectively, alongside Carol Burnett, Will Arnett, Seth Rogen, Dan Fogler, Isla Fisher, Jonah Hill, and Amy Poehler. Recurring Blue Sky collaborator John Powell composed the film's musical score.
The movie was directed by Jimmy Hayward and Steve Martino (making their feature directorial debuts), based on a screenplay written by Cinco Paul and Ken Daurio. It features Jim Carrey and Steve Carell voicing Horton the Elephant and Mayor Ned McDodd, respectively, alongside Carol Burnett, Will Arnett, Seth Rogen, Dan Fogler, Isla Fisher, Jonah Hill, and Amy Poehler. John Powell composed the film's soundtrack.