- Development Hell: There have been attempts to make the series into a feature film and an animated TV series. It's been over a year, and there's been no word on either of these.
- Disowned Adaptation: John R. Erickson was not pleased with the CBS animated adaptation because of the changes that were made (Sally May was the boss, Slim and Loper were just helping hands, the kids were gone, the cattle ranch was changed to a chicken farm.)
- What Could Have Been: Disney considered turning the series of books into an animated feature film. Erickson turned them down, because Disney wanted all the rights to his property and characters, which he was unwilling to sell.
- Write What You Know: Erickson was a rancher, so as you can guess the books use a lot of realistic ranching techniques.
Trivia / Hank the Cowdog