* DuelingMovies: An unintentional example: the movie was released the same year in Hungary when Creator/{{Disney}} released ''Disney/TheFoxAndTheHound'' in the USA. Both movies star a fox, who is pursued by a hunter and his dogs. Since very little information went through the Iron Curtain about animated films in production, it is unlikely that the creators of either movie heard of the other project.
* OutlivedItsCreator: Yes. The Sequel. But this began with István Fekete having a son (also called István Fekete) who though that he absolutely must write sequels for his father's work (he owned the rights after his father's death anyway)... unfortunately he neither has [[ToughActToFollow the talent]] nor the [[ArtisticLicenseBiology understanding of biology]]. The one for ''Vuk'' got licensed and the rest is history.
* WhatCouldHaveBeen: The original makers actually intended to produce a sequel for this movie. A traditionally animated one that kept the original character designs (except fixing the HumanlikeFootAnatomy) and focused on the adventures of a white fox with no input from István Fekete junior.
* WriteWhatYouKnow: István Fekete (the older) was born in a village, had a degree in agriculture, and was an active hunter since childhood. [[ShownTheirWork Let's just say it shows]]. (For comparison István Fekete junior was/had neither and that shows too.)
----