This has probably been brought up before, but I'm gonna do it, too. Ringed vs. natural.
A fox tail does not naturally grow rings, ever. A person twists the foxes tail to form the rings, and it isn't very good for the leather of the tail, which is why I'd suggest you not to twist the tail, either. Be careful when trying to undo the rings, and don't try to force it, either. May end up tearing them.