Who did the voice of The Lorax (2012)?

Dr. Seuss' The Lorax is a 2012 American computer-animated 3D musical fantasy comedy film produced by Illumination Entertainment and based on Dr. Seuss' children's book of the same name. The film was released by Universal Pictures on March 2, 2012, the 108th birthday of Dr. Seuss.

The second adaptation of the book, following the 1972 animated musical television special, the film builds on the book by expanding the story of Ted, the previously unnamed boy who visits the Once-ler. The cast includes Danny DeVito as the Lorax, Ed Helms as the Once-ler, and Zac Efron as Ted. New characters introduced in the film are Audrey (voiced by Taylor Swift), Aloysius O'Hare (Rob Riggle), Ted's mother (Jenny Slate), and Grammy Norma (Betty White).

The film received mixed reviews from critics and was a box office success, grossing $214 million domestically and $348.8 million worldwide based on a $70 million budget.