Talking of the craftiness/cunning of foxes, how do they know about live rails or do they just watch a load of their chums die and then decide 'maybe I won't follow them?'.
I was working in London last year and used to catch the infamous Northern Line to and from Colindale. I would regularly see a
Fox sloping along the side of the tracks. It never once crossed them. How did it know not to cross the track?