Dr. Seuss’ Horton Hears a Who! reached $287 million this weekend at the worldwide box office, with almost half of that amount ($136 million) already coming from overseas, an impressive feat for a Dr. Seuss adaptation. Previous movies based on books by the author, who is little known outside of the U.S., didn’t fare so well with foreign markets generating less than 25% of the total grosses for How The Grinch Stole Christmas and The Cat In The Hat.