Take a look at this link. My theory: We have traditionally been told that Coyotes heat rabbits and small game. After seeing the footage on a local News Broadcast of the coyote taking down the whitetail and now this.....
http://www.rr.com/news/topic/article/rr/9000/9338811/Coyotes_kill_woman_on_hike_in_Canadian_park
There is a new super strain of coyotes out there - Possibly in response to the release of the new Twilight movie next month?

"A fanatic is someone who can't change his mind and won't change the subject" Churchill