Nat Geo WILD goes inside the harrowing accounts of two U.S. grizzly attacks that left one dead and others critically injured.

Nat Geo WILD details two brutal shark attacks -- one of them fatal -- that left victims stunned and local communities on edge. Revisit the tense moments through firsthand accounts and heart-pounding recreations.

Hippos can be among the most aggressive and territorial creatures on the planet -- two groups of tourists learned this the hard way when a routine trip down Zimbabwe's Zambezi River leaves them fighting for their lives.

When an American Billionaire on a family safari and an amateur photographer holidaying with friends are attacked by elephants, their lives hang in the balance.

A routine outing in the mountains of northern California turns violent when unsuspecting trail-goers cross paths with the region's most notorious predator: the cougar.