Louie van Grootel is working in the Canadian wilderness when he's attacked by a massive grizzly bear. In Colorado, Travis Kauffman is trail-running and comes face to face with a hungry mountain lion.

Louie van Grootel is working in the Canadian wilderness when he's attacked by a massive grizzly bear. In Colorado, Travis Kauffman is trail-running and comes face to face with a hungry mountain lion.

Sandy Prince is swimming in an African river when she's attacked by a massive crocodile. While mountain-biking in Washington State, Phil Anderson comes face to face with a hungry cougar.

Sandy Prince is swimming in an African river when she's attacked by a massive crocodile. While mountain-biking in Washington State, Phil Anderson comes face to face with a hungry cougar.

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.

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.

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.

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.

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.

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.

Bob Legasa's 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's thrown into the water and finds herself in the jaws of a hippopotamus.

Bob Legasa's 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's thrown into the water and finds herself in the jaws of a hippopotamus.

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.

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.

In 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.

In 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.