Check out this video of a brown bear killing a moose. I am not sure where the video was taken but I am guessing it is in Western Canada or Alaska.
http://www.livevideo.com/video/trigirl/36C10B602FDA4939A1955906F725DE72/brown-bear-kills-moose-in-driv.aspx
"Chance favors the prepared mind" - Louis Pasteur