Hiking in the Montana mountains, trail engineer Todd Orr is attacked twice by grizzly bear protecting her cubs; during a vacation in the Bahamas, Tiffany Johnson is snorkeling when she finds herself face-to-face with a tiger shark.
Andrea Schlake is volunteering at an animal sanctuary when a chimpanzee escapes its enclosure and chases her down. Surfer Todd Endris is ready to catch a wave when a great white shark knocks him off his board and attacks him.
Jim Lane is picking blueberries alone in the Blue Ridge Mountains when a rattlesnake strikes. Teacher Rachael Lilienthal is swimming in a Florida river when an alligator bites down on her arm, pulls her underwater and doesn't let go.
A grizzly bear charges taxidermist Wilf Lloyd while he hunts elk with his son-in-law in the Canadian Rocky Mountains. Miles from shore, diving 180 feet below the surface, spearfisher Anthony Segrich finds a bull shark charging toward him.
A polar bear chases down Erin Greene as she walks home from a Halloween party in a small arctic town. A bull shark attacks triathlete Chuck Anderson in the Gulf of Mexico, biting his arm and pulling him to the ocean floor.
Diver Tim Saxon films underwater at the Great Barrier Reef and gets stung by an Irukandji jellyfish, one of the world's most venomous animals. A grizzly bear attacks forester George Knoll in the remote Great Bear Rainforest.
Jordan Carbery is investigating a noise outside his cabin and encounters a massive grizzly bear; Zanele Fox and her husband take a river tour when she is thrown from her raft and ravaged by a crocodile.
While having a beach day in Southern California, Leeanne Ericson is dragged under water by a great white shark; Braxton Rocha is attacked by tiger shark off Hawaii's northern coast.
Outside Corpus Christi, Texas, Jeremy Sutcliffe is working in his garden when a rattlesnake bite puts him on the brink of death; while spearfishing in the Bahamas, Kent Bonde is blindsided by a bull shark that tears the calf muscle from his leg.
On a family trip to Pattaya, Thailand, Helen Costigan attends an elephant show when one of the massive beasts turns deadly; golf ball recovery specialist Scott Lahodik is diving in a Florida lake when he's attacked by a vicious alligator.
Bob Legasa is hunting in Montana and what he thinks is a bluff charge from a grizzly bear is, in fact, a near-lethal attack; while canoeing in Zimbabwe, Kristen Yaldor is thrown into the water and finds herself in the jaws of a hippopotamus.
During an archery hunt in Cranbrook, British Columbia, Chad Dueck comes face-to-face with a mother grizzly bear; in Tracy, Calif., Walt Dean King is savagely attacked by a Brahma Bull roaming his neighborhood.
While vacationing in South Africa, Peter Knottenbelt suddenly finds himself in the jaws of a massive crocodile; in Nova Scotia, Meg Doyle is walking her beloved dog when they're suddenly ambushed by a pair of angry raccoons.
On family trip to the Canadian wilderness, 12-year-old Zac Delventhal is dragged from his sleeping bag by a hungry wolf; while swimming in the Pacific Ocean, Maria Korcsmaros is attacked by a great white shark.
Sandy Prince is swimming in an African river when she's attacked by a massive crocodile; mountain-biking in Washington State, Phil Anderson comes face to face with a hungry cougar.