National Geographic WILD HD Saturday

The return of European bison and grey wolves to the Carpathian mountains, a development that has benefits for both the ecosystem and the region's human inhabitants

Across Iberia, food chains and ecosystems are being restored allowing endangered animals, including the rarest cat in the world, to flourish

In Italy and Croatia, efforts to save a rare species of bear are helping many other animals to thrive and landscapes to flourish

There is a surprise announcement when Dr Emily reveals she has another child on the way and discusses what it's like to be a veterinarian and a mother

It is canine chaos at the clinic this week, with dogs leaving the vets working non-stop. From mischief-making pups to an intense emergency

Documentary following black bears as they prepare for the coming winter during salmon spawning season in their riverside feeding grounds

Les Stroud examines the survival skills of moose in Alaska during mating season - but observing them up close proves dangerous

Bjorn gets into difficulty when he heads out to a job during a storm, and a truck causes big problems for Marius in the North

An avalanche is set off to secure a road when a snow plough breaks down in the south. Plus, a salvage truck expert must act fast when he slips off the road

Documentary following a team of salvage truck drivers working on Norway's most dangerous roads. A major challenge turns up in the forest

From the Arctic Islands to the vast snow forests of the Taiga, journey to the very top of our planet to see the world's toughest creatures in their spectacular habitats

The rock climber scales the remotest and toughest walls and peaks of Greenland. The first stage of Alex's epic expedition gets underway

The team is hit by deadly ice falls before crossing a treacherous icecap

In the final stage of the epic Greenland expedition, Alex and his fellow professional climbers face what could be their most dangerous ascent yet

Documentary investigating terrifying tales of shark attacks, including the story of two newlyweds who were surfing with friends when they were targeted by the marine predator

Documentary investigating attacks by hippos, featuring two safari guides who were left fighting for their lives, and a couple whose boat capsized following a terrifying encounter

Documentary exploring unusual friendships between humans and animals, including a deer that befriended two people and a cat, and a boy who bonded with a Cape buffalo

A look back at highlights from the series shining a light on unlikely and unusual animal friendships, including a tortoise that struggles to keep up with his hippo friend

Highlights from the series featuring animals that rely on striking fear into their enemies to hunt prey or scare off predators

Highlights from the series exploring how family groups of animals that normally rely on teamwork to survive can end up fighting among themselves

As Dr Oakley assesses a reindeer herd, the team try to get past a donkey protecting a mini horse, before checking in on some therapy animals