The dunes and deserts of Africa are a land where only the toughest can survive. These are some of Africa's deadliest.

The amazing landscape and wildlife of the Lower Okavango river in southern Africa, including what happens when the river runs its course.

From high-speed cheetah hunts in the Karoo to deadly river crossings in the Serengeti, Africa's savannah specialists battle it out for survival.

Beyond the idyllic beaches and theme parks, wildlife thrives in swamps and shorelines. Alligators, bullfrogs, and poisonous snakes fight for survival.

National Geographic Wild. The Komodo Dragon has captured our imaginations for over a century, yet we are only now uncovering some of its most incredible secrets.

From the hunting techniques of the Ethiopian wolf to the highspeed pursuits of the Verreaux's Eagle, Africa's assassins are specialist predators.

Beyond the idyllic beaches and theme parks, wildlife thrives in swamps and shorelines. Alligators, bullfrogs, and poisonous snakes fight for survival.

Crows are as smart as dolphins and can talk like parrots. Wolves can hunt for three days straight in a territory the size of Delaware.

Frogs may just be the key to human immortality, while a cat's purrs could help keep astronauts alive in space.

The long, dry winter brings desperation to the animals who live here. Prepare yourself for a highly charged, emotional, and informative ride.

A giant 2.5 metre black mamba is holding an apartment block hostage. Sioux uncovers another one at a wedding venue, and she must catch it alone.

Zion's iconic landscapes feature soaring red spires against a clear blue sky. Beyond canyons and cliffs, water emerges as a surprising force.

The long, dry winter brings desperation to the animals who live here. Prepare yourself for a highly charged, emotional, and informative ride.

A giant 2.5 metre black mamba is holding an apartment block hostage. Sioux uncovers another one at a wedding venue, and she must catch it alone.

Mbali completes her training by capturing an enormous black mamba inside a garden shed and Simon and Sioux head off to India for a new adventure.

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

Pol Veterinary Services is overrun by puppies who don't want to take their medicine. Dr. Pol treats three goats and one adorable miniature horse, while Dr. Brenda meets her match in a sassy reindeer.

On a Wing and a Mare. Dr. Pol hits the road to treat Louella, a huge sow that's too ill to feed her 15 piglets. Dr. Lisa assesses a newborn colt's wobbly gait and stitches up a mare's leg gash.

Intelligent, cultured and deadly, the killer whale dominates every ocean on earth and as our planet changes, this top predator changes with it.

Jellyfish are the deadliest creatures on the planet. They were one of the first life forms on earth and they may be the last.

Revealing how species including the tiger shark, the nurse shark and the great white hunt, and how they go about their normal daily lives.

The oceanic whitetip has attacked more people than any other shark, and it could be developing an even more fearsome reputation.

A fascinating look at the biggest and most fearsome predators in the animal kingdom, which are used to using their power to get what they want.

Orcas on the hunt, penguins protecting their young, foxes patrolling... Argentina's Atlantic coastline is as dynamic as it is dangerous.

In Argentina's breathtaking, yet imposing wilderness, every day is a fight for survival. The terrain is rugged and parched. The air is thin. The weather can change in an instant. And then there are the predators.

From anacondas to the tiny dusky swifts who rule the world's largest waterfall, Argentina's water worlds are full of natural wonders.

Orcas on the hunt, penguins protecting their young, foxes patrolling... Argentina's Atlantic coastline is as dynamic as it is dangerous.

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

Pol Veterinary Services is overrun by puppies who don't want to take their medicine. Dr. Pol treats three goats and one adorable miniature horse, while Dr. Brenda meets her match in a sassy reindeer.

On a Wing and a Mare. Dr. Pol hits the road to treat Louella, a huge sow that's too ill to feed her 15 piglets. Dr. Lisa assesses a newborn colt's wobbly gait and stitches up a mare's leg gash.