It’s an absolute fixture in children’s libraries worldwide and upon its publication in 1963 was awarded the Caldecott Medal, a distinguished award given to the year’s best picture book for children as decided by the Association for Library Service to Children. In the years since, it has inspired countless toys and children’s games. But now that "Where the Wild Things Are's" big-budget Hollywood adaptation has arrived in theaters this weekend, people are finally asking if it's really a children's story.

Even the film, whose director Spike Jonze’s past films explore similar themes in more of an adult context, has inspired its own children’s toys, including a video game. The fact that "Where the Wild Things Are" is primarily made up of author Maurice Sendak’s illustrations certainly endears it to children but its themes of isolation, growth, and dreams has spoken to adults for years. And now that reviews are trickling in, critics are asking if the film adaptation was truly intended for children.

Last year, Hollywood press circulated rumors that the film had to be completely reshot after Warner Bros and Jonze began clashing. The word was that Jonze had shot the film with adults primarily in mind and did not address a children’s audience enough. Whatever changes were made to the original version of the film, it’s still being reviewed in some cases as an adult adventure masquerading as a children’s story. Analyze the background of its author and illustrator, Sendak, and you may find this isn’t terribly surprising.

Already 35 years old when the book was published, Sendak has been downright defiant in approaching questions about the film’s appropriateness for children. What’s more, in a documentary being featured on HBO, Sendak claims he doesn’t “believe in childhood.” Sendak’s telling the New York Times in 2008 that he had never revealed his homosexuality to his parents and “all I wanted was to be straight so my parents could be happy” further accentuates some of the potentially-adult themes explored in "Where the Wild Things Are." Same goes for some of the Holocaust references and sexuality in another of his picture books, "In the Night Kitchen."

To be sure, "Where the Wild Things Are," both the book and film, will entertain countless children, as will the countless toys it inspired. But when it comes to the adult audience, they might share a more visceral, profound response to the story, and that may not be entirely unintended.