As we retreat indoors, the wildlife must remain outdoors to brave the harsh weather ahead; those who can prepare do before retreating to the relative comfort of their winter refuge.

Rodolphe dives into icy waters from the Salish Sea to Norway to see if we can live with killer whales, intelligent and family-driven - yet feared - predators whose fate is closely tied to ours.

Devastating mudflows flatten the Californian coastal community of Montecito; a sudden flash flood sweeps up an inexperienced kayaker in South Africa.

Jeremy travels to Brazil's 'wild west' in search of a river monster that has killed three cowboys; he has to combat all his fears to catch this culprit when one is finally cornered.

A new intern is tasked with helping the team remove a gator from a 20-foot-deep well, and Callie and Shannon rescue a gator hanging out near a movie theatre.

A family and their pets are in danger when a gator finds a cool shady spot under their house, and a training day for intern Grace becomes scary when the team finds a huge gator at a local ranch.

The realm of cold is a harsh territory, but it is also full of opportunities; only the most resilient creatures manage to thrive in an environment where adaptation is the key to survival.

Jeremy Wade sets out to discover the true river monster of South America; piranhas get all the press, but is there a more fearsome predator lurking in its rivers?

In the dead of winter, Alaskans travel high, far and wide to obtain resources for survival. Glenn pursues caribou in the mountains of the Brooks Range.

Our night train travels through the mystical midnight sun past the most diverse Norwegian landscapes. We meet people who want to restore the balance in nature in their own way.

We cross continents to reveal the world's most dramatic survival arenas. From lionesses hunting zebra to dingoes clashing with echidnas, every grassland teems with rivalry and risk.

In the dead of winter, Alaskans travel high, far and wide to obtain resources for survival. Glenn pursues caribou in the mountains of the Brooks Range.

A bomb cyclone detonates across northeast America, snaring an elderly Michigan couple in a mass freeway pile-up. A hiker loses her nerve high on Ben Nevis.

Jeremy Wade sets out to discover the true river monster of South America; piranhas get all the press, but is there a more fearsome predator lurking in its rivers?

In the dead of winter, Alaskans travel high, far and wide to obtain resources for survival. Glenn pursues caribou in the mountains of the Brooks Range.

Our night train travels through the mystical midnight sun past the most diverse Norwegian landscapes. We meet people who want to restore the balance in nature in their own way.

The realm of cold is a harsh territory, but it is also full of opportunities; only the most resilient creatures manage to thrive in an environment where adaptation is the key to survival.

Jeremy travels to Japan to try to uncover the truth behind two of their most extraordinary River Monster legends; he is about to discover a monster like nothing he has ever encountered before...

Alaskans must trap and hunt for essential food and fur to survive dark winter. In Kavik, Sue Aikens hunts for caribou and ptarmigan on the tundra.

Germany's Harz mountains stand for wild nature, with snowstorms in the winter and rain-soaked forests in the summer; filmmaker Uwe Anders travels to the Harz to capture both landscape and wildlife.

We cross continents to reveal the world's most dramatic survival arenas. From lionesses hunting zebra to dingoes clashing with echidnas, every grassland teems with rivalry and risk.

Alaskans must trap and hunt for essential food and fur to survive dark winter. In Kavik, Sue Aikens hunts for caribou and ptarmigan on the tundra.

A bomb cyclone detonates across northeast America, snaring an elderly Michigan couple in a mass freeway pile-up. A hiker loses her nerve high on Ben Nevis.

Jeremy travels to Japan to try to uncover the truth behind two of their most extraordinary River Monster legends; he is about to discover a monster like nothing he has ever encountered before...