I'm not sure how your comment is relevant to the above thread, but I like it and I would like to add on to it. There was a study done looking at the impact of

I'm not sure how your comment is relevant to the above thread, but I like it and I would like to add on to it. There was a study done looking at the impact of wolves, deer, hunters, and traffic accidents. What they found was that the smell of wolves scared off deer - thus reducing deer related traffic accidents; wolves were more effective at this than hunters killing deer. This is a round about way of corroborating your fact, but from a different point of view.