National Geographic - Untamed Americas (2012)

Outside our concrete jungles, beyond the strip malls and just minutes from our own backyard is another world that is thriving, fighting and surviving. Brawny mountains, burning deserts, tangled forests and curvaceous coasts. A grizzly bear takedown of helpless elk calves in Yellowstone. Big horn sheep going head-to-head in battle. Giant Humboldt squid cannibalizing their kin. Mountain lion cubs hunting solo for the first time. The landscapes and wildlife of the Americas are savage, shrewd and stunning. These are the great outdoors, our wildest frontiers - our Untamed Americas. National Geographic's four-hour mini-series, Untamed Americas, explores some of the greatest wildlife spectacles and against-the-odds fights for survival in the continents` mountains, deserts, coasts and forests. Narrated by actor Josh Brolin

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Part 1: Coast
At the frozen poles or the sultry tropics, the coasts of the Americas host some of the greatest spectacles on earth. At the Falkland Islands in the southern end of the Americas, watch male gentoo penguins perform mating jigs to attract females. Farther north, plunge into the Sea of Cortez off the coast of Mexico, where hordes of voracious giant Humboldt squid cannibalize their kin.


Part 2: Deserts
In the deserts of the Americas, an abundance of wildlife has developed an array of bizarre and baffling against-the-odds survival strategies. Go to the Atacama Desert along the coast of northern Peru, where Humboldt penguins raise their families in the driest place on earth. Filmed for the first time in high-speed infrared, see the tiger moth dodge millions of hungry bats emerging from caves in the Chihuahua Desert.


Part 3: Forests
A journey through the forests of the Americas is one of extremes flood, freeze and fire. The animals that live there not only endure, but adapt and thrive in surprising ways. As the flood season arrives in the Amazon rain forest, witness the mighty Amazon River burst its banks and transform a lush rain forest into a watery world where river dolphins hunt along the forest floor and an elusive jaguar takes down a caiman crocodile with stunning expertise.


Part 4: Mountains
From the Arctic to the peaks of the Andes, survival at great heights takes real guts. On the Yellowstone plateau, in a rarely filmed event, see newly awakened black bears go on the hunt for newborn elk calves. Get a ringside seat at one of the toughest mating contests on the planet as male bighorn sheep in the Rocky Mountains literally go head-to-head in a bloody battle for breeding rights.


Part 5: Extra; Moose: Titans of the North
In the northern wilderness, the moose reigns as king. Symbols of strength and endurance, these beasts are constantly fighting for survival against man, nature and the extreme temperatures of the chilling Alaskan winter. Follow along their tracks as the NGC offers an inside look at their battle against starvation and deadly encounters. Though many will fall and die along the way, witness the triumph of the victorious in Moose: Titans of the North.