In the old book/movie, "Goodbye My Lady", the basenji was lost and living in a swamp when rescued by the boy. Dexter was re-enacting that role, perhaps!
STILL LOST-ID-Parma-Red & White Female PB-On Craigslist
She is still lost but it does not state from what date. She is microchipped and was/is wearing a dark red/green collar. There is a generous reward.
Parma is approximately 40 miles NW of Boise, near the OR/ID border.
Here is the ad: