The error came out:

Stories are told to children to form desirable behavior. Example: if you are going to walk in the woods with wolves (read, adult men) - the stomach gets heavy. Whoever is curious, self-discuss which fairy tale is what morality. But keep in mind, the above applies to natural folk tales, not edited for children's books.

In the fairy tale, the stomach was heavy in the wolf, so it is not clear who is more dangerous to walk in the forest.