Fox/Blue Sky’s Horton Hears a Who! opens today in 3,954 theatres, according to Box Office Mojo. The film is winning over the critics, garnering an impressive 82% on the Rotten Tomatoes Tomatometer. Their consensus is that the film “is both whimsical and heartwarming, and is the rare Dr. Seuss adaptation that stays true to the spirit of the source material”. Box Office Prophets predicts a #1 weekend with $41.3 million, while Box Office Reports sees it doing a bit better with $49 million.