NatGeo Wild

'S2/E1 of 3 - Polar Bear'. A forensic look at how polar bears hunt seals, whales and walruses, offering new perspectives on how they expertly detect, track and execute the kill.

'S2/E2 of 3 - Leopard'. A forensic look at how leopards hunt varied prey like impala, catfish and storks, offering new insights into their killer ambush strategies.

'S1/E3 of 3 - Crocodile'. A forensic look at how crocodiles hunt large prey like wildebeest and zebra, offering new perspectives into their killer ambush strategies.?

'S1/E5 of 5 - Olympic'. From glacial peaks to temperate rainforests and the rugged Pacific coast, Olympic National Park protects unique environments with rich biodiversity.

'S2/E1 of 3 - Polar Bear'. A forensic look at how polar bears hunt seals, whales and walruses, offering new perspectives on how they expertly detect, track and execute the kill.

'S1/E5 - Mud And Mangroves'. Phil Breslin heads into the muddy mangroves for an encounter with a mud crab, a shovel-nosed ray and a mosquito... or a lot of mosquitoes.

'S1/E6 - Big Blue Ocean'. Phil Breslin heads to the sea for an encounter with the ferocious tiger shark, the graceful manta ray and a giant of the deep, the humpback whale.

'S1/E2 - Eyes on the Pride'. Malika the lioness may become queen of her pride if she can survive the dangers of South Africa's wilderness, but first she must travel alone and prove her dominance.

'S1/E2 - Desert Dwellers'. In the desert heat, Phil encounters the perentie, Australia's largest lizard, the emu, its fastest flightless bird, and the iconic red kangaroo.

'S1/E3 - Alien Empire'. Evolution has forged otherworldly creatures that are stranger than fiction.

'S1/E2 - Eyes on the Pride'. Malika the lioness may become queen of her pride if she can survive the dangers of South Africa's wilderness, but first she must travel alone and prove her dominance.

'S1/E2 - Desert Dwellers'. In the desert heat, Phil encounters the perentie, Australia's largest lizard, the emu, its fastest flightless bird, and the iconic red kangaroo.

'S1/E5 - Mud And Mangroves'. Phil Breslin heads into the muddy mangroves for an encounter with a mud crab, a shovel-nosed ray and a mosquito... or a lot of mosquitoes.

'S9/E4 - Monster Python'. A huge python needs rescuing and another caller has a lucky escape from a deadly viper.

'S9/E5 - Killer Krait'. Simon and Sioux attempt to rescue India's 'big four' deadliest snakes - the spectacled cobra, Russell's viper, the saw-scaled viper and the common krait.

'S9/E6 - Cobra Dive'. An enormous Russell's viper finds its way into a city bookstore, and in a career first, Simon goes underwater snake-catching to rescue a cobra.

Scientists attempt to trap, collar and study the elusive and beautiful big cat in spite of its habitat being part of a war zone.

'S1/E1 - Death Knocks'. Journey with lion cub Malika as she battles the life-and-death hardships of surviving South Africa's wilderness, including the loss of her siblings to a pack of hyenas.

'S1/E2 - Eyes on the Pride'. Malika the lioness may become queen of her pride if she can survive the dangers of South Africa's wilderness, but first she must travel alone and prove her dominance.

From tree-climbing leopards and skull-crushing jaguars to quick-digging sand cats, watch the killer strategies that make wild cats possibly the deadliest family on Earth.

Big cats seem predictable, yet their instincts can shift in surprising ways.

Exploring the similarities between domestic cats and their wild cousins and ancestors.

'S4/E1 - Lion'. Adult lions are 400 pounds of muscle, teeth and claw - lion cubs are four pounds of blind, toothless fluff. Follow the transformation of a cub into a killer.

Big cats seem predictable, yet their instincts can shift in surprising ways.

'S9/E6 - Cobra Dive'. An enormous Russell's viper finds its way into a city bookstore, and in a career first, Simon goes underwater snake-catching to rescue a cobra.