Jim Carrey, who previously inhabited the world of Dr. Seuss as the title character in the smash hit The Grinch will voice the role of the immortal Horton, the elephant who knows that a person's a person, no matter how small. Steve Carell will voice the Mayor of Who-ville, a distinguished figure of a very small size, too small to be seen by the elephant's eyes.
The film is based on the beloved book, first published in 1954, by Ted Geisel, who wrote under the pen name Dr. Seuss. Seuss books are among the defining works of family literature, have sold over 200 million copies, and have been translated into fifteen languages. The "Horton" series (Horton Hears a Who, Horton Hatches the Egg) are consistently among the top-selling of all Seuss titles -- generation after generation.
Horton Hears a Who is about an imaginative elephant who hears a cry for help coming from a tiny speck of dust floating through the air. Suspecting there may be life on that speck and despite a surrounding community which thinks he has lost his mind, Horton is determined to help.