Episode list

The tropics are home to millions of species of animals that clash in savage battles for survival. But what happens when the tropics' most ruthless turn on each other? Watch as these animals go head-to-head with their own kind and turn these tranquil vacation spots into bloody battlegrounds. From the rookie tiger whose hunger for territory ends in fatal violence, to the monster-sized monitor lizards that fight like professional wrestlers, life in the tropics is anything but paradise.

In the wild badlands of the Americas, there are no rules when it comes to survival. Watch what happens when the New World's most ruthless killers turn against each other and fight tooth and claw against their own kind. From a grizzly bear's audacious robbery gone bad, to a starling defending her home to the death, the contenders range from the massive to the miniature, all fighting to stay alive.

Survival doesn't come easy when living in the world's most extreme environments. From freezing Siberia, where scarce resources force mighty golden eagles to fight for food, to the mountains of Pakistan, where mating season sparks a deadly duel between two markhor goats thousands of feet up a mountain, watch what happens when survival means fighting the elements and each other.

From the mountain summits that touch the sky, down to the dark waters of the ocean depths, extreme altitudes are home to millions of species that clash in savage battles for survival. For these animals that live life on the edge, playing nice just isn't an option when resources are scarce and the conditions are harsh. From a bald eagle earning its wings in aerial combat, to the dog-eat-dog world of coyote pack fights, things get deadly as animals fight to become king of the mountain.

Watch what happens when the world's wildest animals turn on their own kind as we bring you up close and personal to the toughest and meanest fights on dry land. From a badger's failed attempt to feed her kids, to a hippo defending his family to the death, to a switchblade knife fight between wild turkeys ' it's a no-holds-barred fight fest across some of the greatest land masses on Earth.

Witness what happens when the world's most exceptional animals turn on their own kind. From two lion brothers staging a hostile takeover of a pride, to saltwater crocodiles battling for the bathing rights to a river, to a nest of Giant Japanese hornets eating their queen alive ' it's a no-holds-barred fight fest across the world's most incredible landscapes.