VIDEO: Mountain Lion Struggles With Taking Down Big Buck

VIDEO: Angry Bison Attacks, Sends Other Bison Flying Through Air

VIDEO: Forget Mice or Woodchucks - Bears Under Your Deck Are Worse

VIDEO: See the Eerie Moment Lynx Climbs Onto Logging Equipment and Watches Man Filming

VIDEO: Bear Charges and Tackles Bow Hunter

VIDEO: Bear Climbs Up Treestand, Hilariously Surprising Hunter

VIDEO: Elk Have Beautiful Sunrise Swim Across Lake in Yellowstone

VIDEO: Grizzly Bear Kills Cattle On the Side of Road

VIDEO: Guess What Happens When These Kids Get Way Too Close to Yellowstone Bison

VIDEO: Couple Laughs, Screams, as Bear Stands Up and Peers Into Car at Yellowstone

VIDEO: Yellowstone's Wapati Wolf Pack Plays Tug-of-War With Traffic Cone

VIDEO: Watch Yellowstone Wolf Pack "Herd" Grizzly Into Tree-line

VIDEO: Grizzly Bear With Cubs Walks Up To Car, Stands on Hind Legs

VIDEO: Mountain Biker Is Startled On Trail By Bear Cub

VIDEO: Yellowstone Grizzly Bear Charges Park Ranger Near Mammoth Hot Springs

VIDEO: Huge Elk Herd Crosses Road Near Deer Lodge

VIDEO: Ennis Man Films Moose Running Next To Car

VIDEO: Yellowstone Grizzly Follows Family Onto Boardwalk

VIDEO: See moose calf rescued by quick-thinking kayakers

VIDEO: Group of Moose Swim Across Lake