Built for the Kill

Killer whales are smart, lethal and social - and unlike their archenemy, the great white shark, killer whales hunt in packs. See how they work together to stun tiny herrings with sound, immobilize stingrays by flipping them upside down, wash sleeping seals off ice floes and bludgeon the mighty blue whale. The killer whale has the speed, strength and sophisticated hunting skills to attack the legendary great white shark, the largest predatory fish on earth. It's the ultimate showdown.

The big bad wolf is 100 pounds of muscle and teeth, but it's born blind, deaf and weighing just 1 pound. Follow the transformation of a helpless pup into an accomplished killer. The wolf hones its hunting skills over about two years of intensive training - and the lessons are hard. Only the strongest survives to become leader of the pack, facing off in an epic battle against the mountain lion - an animal nicknamed "the perfect predator."

The hyena is no cowardly scavenger, but a dominant predator, capable of killing from the moment it's born. Endowed with superior hunting tools, including night vision and incredible stamina, the hyena trains for five years before making its first big kill. Nat Geo WILD follows the progression of one princess cub from birth to her first big kill. See how she fights with her siblings, hones her hunting skills, fends off lions and eventually succeeds her mother as the queen of the clan.

Nat Geo WILD follows the transformation of a helpless, blind, 1-pound cub into a 1,000-pound killer, exposing real life-and-death struggles. The young bear has three years to hone his skills by his mother's side and learn how to survive against nature's harsh elements and other male bears who wouldn't hesitate to kill a cub. After three years of training, will this cub have what it takes to face off against his mortal enemy, the wolf?