AOL has just posted the very first teaser trailer for Dr. Suess' Horton Hears a Who.

To watch it now CLICK HERE

An adaptation of Dr. Seuss's 1954 children's book, Horton Hears a Who is about an imaginative elephant (Jim Carrey) 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 that thinks he has lost his mind, Horton is determined to help. Carell voices the mayor of Who-ville, a distinguished figure of a very small size, too small to be seen by the elephant's eyes.

Horton Hears a Who opens on May 14th, 2008.