I think that video is about 2 years old. Not 100% sure but pretty sure.
http://m.youtube.com/results?q=alert!%20yellowstone%20buffalo&sm=3
That is the a link to a page brought up when i I searched. The first one is the video on Gateway Pundit. It was posted 3/20/2014. There are others but I haven’t checked the dates yet.
What did the Mama Buffalo say when her son went off to college? “Bi-son!”