It means a fox goes back over its own footprints to hide where it walked. Here are three simple ways to say that:
- The fox walked back over its own footprints.
- The fox turned around and went back along its tracks.
- The fox retraced its steps to hide its trail.
Tip: To make your own rephrase, swap words for easier ones with the same meaning — for example, double back = go back or turn around, and tracks = footprints or trail.