The fox on the next plot (one of this year's cubs) is cheeky. I've seen it quite often during the day, and it stops & looks at me.
The daftest thing that happened was one day I was standing on top of the bank at the end of my first plot, and I saw her on the new plot, about to squat on the potato patch. I said "No, not there" and she shifted over and dealt with things in the rough grass under the brambles!
I know the foxes catch the rats - last winter we had to dispose of a couple of corpses on out plot. I think they must have been disturbed. I hope that this year's batch don't start acting like cats and leaving dead stuff on the doorstep as presents!