When I were a lad, I used to play 'trekking' (essentially an all day hide & seek game between two teams of kids) in a large woods on the outskirts of Plymouth, Devon.
One day whilst hiding up a tree, being very quiet as to avoid capture, I spotted a small fox padding up the path below me.
It was totally silver in colour and disappeared into the undergrowth several metres away from me.
Now, I wasn't particularly inquisitive in a fortean sense at the age of 8, but as the years have gone by, it stands out as one of the definitive odd occurances in my life so far.
I'm not aware of any fur farms in or around plymouth by the way.