"All's well that end's well," he chuckled, and closed his eyes sleepily.
Blacky never could have fooled old Granny Fox as he did Reddy. She is far too smart to be fooled even by so clever a scamp as Blacky. She is so smart that she deserves a book all her own, and so the next volume in this series will be Old Granny Fox.
The author chose to end the story this way in order to