NatGeo Wild

'S1/E2 of 3 - The Wolf Queen'. Meet the Polygon Pack, a family of arctic wolves surviving and raising young in amidst the polygon ponds of the high Arctic.

'S1/E3 of 3 - The Last Hunt'. As winter approaches, the pack is running out of food, but White Scarf leads the pack in a successful hunt of a musk ox calf and ensures that the pups eat first.

In Yellowstone National Park, several wolf packs reside and compete for territory and pack leadership.

Footage of a lion versus cheetah fight sheds new light on the relationship between these extraordinary big cats.

'S1/E2 of 3 - The Wolf Queen'. Meet the Polygon Pack, a family of arctic wolves surviving and raising young in amidst the polygon ponds of the high Arctic.

'S1/E3 of 3 - The Last Hunt'. As winter approaches, the pack is running out of food, but White Scarf leads the pack in a successful hunt of a musk ox calf and ensures that the pups eat first.

'S1/E9 - Rivers Of Life'. Phil Breslin journeys down Australia's river system, encountering the peculiar duck-billed platypus, the long-finned eel and notorious bull shark.

'S1/E10 - Woodland Wanderers'. Phil Breslin delves into the woodlands to track down the cleverly adapted yellow-bellied glider, the deadly eastern brown snake and the sleepy koala.

'S1/E6 - Mountains'. The highest mountains on Earth are home to snow leopards, golden eagles and mountain goats, but only the toughest can endure the extreme weather, scarce food supplies, and limited oxygen on these peaks.

'S3/E5'. From glacial peaks to temperate rainforests and the rugged Pacific coast, Olympic National Park protects unique environments with rich biodiversity.

'S1/E4 - Deserts'. The planet's hottest habitats - our deserts - are getting even hotter, drier and bigger, yet a host of remarkable animals still survive in the harshest conditions.

'S1/E6 - Mountains'. The highest mountains on Earth are home to snow leopards, golden eagles and mountain goats, but only the toughest can endure the extreme weather, scarce food supplies, and limited oxygen on these peaks.

'S3/E5'. From glacial peaks to temperate rainforests and the rugged Pacific coast, Olympic National Park protects unique environments with rich biodiversity.

'S3/E3'. Explore Katmai, a land reborn from volcanic ash that bears, salmon, plovers and coastal wolves call home.

'S3/E1 - Zion'. In Zion National Park, sandstone cliffs, slot canyons, and the Virgin River converge, sculpting a vibrant landscape and refuge for wildlife to thrive.

'S1/E4 - Deserts'. The planet's hottest habitats - our deserts - are getting even hotter, drier and bigger, yet a host of remarkable animals still survive in the harshest conditions.

'S1/E5 - Oceans'. Delve beneath the surface of the largest habitat on Earth - our oceans - to uncover a world of extraordinary extremes, from crushing depths to stormy coasts and vast blue deserts to crowded reefs.

'S1/E3 - Polar'. Step inside the most frigid habitat known to Earth: the poles. Here the planet's ultimate survivalists include whale-hunting polar bears, leopard-seal dodging penguins, and a pack of Arctic wolves.

'S1/E1 - Jungles'. Plenty of water, warmth, and light provide perfect conditions for life to thrive and make jungles the most diverse lands on Earth - but make no mistake, they are no Edens...

'S1/E6 - Mountains'. The highest mountains on Earth are home to snow leopards, golden eagles and mountain goats, but only the toughest can endure the extreme weather, scarce food supplies, and limited oxygen on these peaks.

'S24/E5 - A DOCumentary'. A documentary-style look into the personal lives of our country vets. Dr. Pol and Dr. Lisa team up to treat two dogs in emergency labour.

'S2/E5 - Warthogs, Hippos, Mongoose'. This episode's battles range from a badger's attempt to feed her kids and a hippo defending his family to a fight between wild turkeys.

'Sanctuary'. Rains in Tanzania's Katavi National Park have stopped much earlier than usual. Lions, hippos and crocodiles jostle in preparation for extreme drought.

'Salvation'. Katavi gets more hellish by the day. Just when everything is at breaking point, the rains finally return, bringing floods of biblical proportion.

'Purgatory'. Drought-stricken Katavi becomes chaotic as hippos fight to the death, a rogue lion hunts a family of cubs, and fire and ash sweep across the land.

'S2/E3 - Panic In The Streets'. Simon and Siouxsie are woken in the early hours by a call from a panicked community. A large snake is in their village, eating their livestock.

'S2/E4 - Snakes On A Train'. Simon and Siouxsie get their most unusual call-out yet when a train conductor spots a snake disappearing into the vehicle's undercarriage.

'S24/E4 - A Mom Like No Udder'. It is Mother's Day as the vets treat animals struggling to give birth and facing postpartum emergencies.

'S1/E5 - Oceans'. Delve beneath the surface of the largest habitat on Earth - our oceans - to uncover a world of extraordinary extremes, from crushing depths to stormy coasts and vast blue deserts to crowded reefs.

'Sanctuary'. Rains in Tanzania's Katavi National Park have stopped much earlier than usual. Lions, hippos and crocodiles jostle in preparation for extreme drought.