What is horton hears a who tommy?

"Horton Hears a Who!" is a children's book written by Dr. Seuss, first published in 1954. The story follows an elephant named Horton who hears a tiny speck of dust talking to him. The speck of dust is actually the home of the microscopic Whos, who live in the city of Whoville. Despite the skepticism and ridicule of other animals, Horton is determined to protect the Whos and ensure their safety.

The book is a popular and enduring classic of children's literature, known for its message of empathy, kindness, and standing up for what is right. It has been adapted into various forms of media, including a 1970 animated television special and a 2008 animated film.