There's no reason why you'd know this, but if an animal chews on a bunch of lichen, it can take a century to grow back! That's the kind of detail that emerges from this interesting documentary on the Canadian wolf. We start with the usual story of human pioneering destroying all in it's path. Our settlements then becoming paranoid about this predator and so determined to physically eradicate it whilst simultaneously carrying out a psychological hatchet-job on it's image. That's led to a continuing battle between people and wolves - but are they our natural enemy? Sure, people would not have an ...