A married couple and their relative cheated death after they were almost trampled by a marauding bison at scenic Yellowstone National Park,  and  RadarOnline.com  has the video of the terrifying incident.  

Cathy Hayes - a teacher from Utah - was videotaping the huge beast at the park in Wyoming while her husband Jeff and his brother Donald watched-on.

Watch the video on RadarOnline.com

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• animal attack
• Cathy Hayes
• Chris Wragge
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• Yellowstone National Park