Dune is written by Frank Herbert. Frank Herbert wrote The Great Dune TrilogyFrank Herbert wrote Dune Messiah. Dune Messiah has genre Children's literatureChildren's literature has examples: Wolf Brother
[Human]: Could you recommend  any books similar to Dune? [Assistant]: Have you read the whole Great Dune Trilogy?  [Human]: No, I haven't what genre is it? [Assistant]: Speculative fiction and political thriller are the genres of this trilogy.  [Human]: Was it written by Frank Herbert? I think he also  writes children's literature. 
Yes he is the author of these works. If you like children's literature you should check out Wolf Brother.