The animal families in Serengeti stick together, share food, and play around in the grasslands. The young ones get acquainted with the ways of the wild.

Uncover the profound significance and uncertain future of our rivers.

Twice the size of the British Isles, Borneo is the third largest island on Earth and home to possibly the greatest diversity of life of any island, from flying lizards sun bears to orangutans.

Moving day arrives for the nursery school kids; Beni gets a beating from a bully; the socialization cage has a new queen; dominant male Pujon is still on a time-out after attacking Alba, but he's allowed a second chance to bond with his rival.

The animal families in Serengeti stick together, share food, and play around in the grasslands. The young ones get acquainted with the ways of the wild.

Uncover the profound significance and uncertain future of our rivers.

Twice the size of the British Isles, Borneo is the third largest island on Earth and home to possibly the greatest diversity of life of any island, from flying lizards sun bears to orangutans.

Bill Nighy leads a magical journey in the Norfolk Broads along England's holiday river, the River Bure; discovering a watery world where both wildlife and recreation go hand in hand.

Animals that have evolved unusual abilities.

The red fox of Prince Edward Island.

Barry and Hayley's adventure in the UK continues at a rehab center where they use the latest in alternative therapies.

Bill Nighy leads a magical journey in the Norfolk Broads along England's holiday river, the River Bure; discovering a watery world where both wildlife and recreation go hand in hand.

Animals that have evolved unusual abilities.

The red fox of Prince Edward Island.

Beni faces a day of reckoning as all the forest school students are held back for a weigh-in; Alba is back in isolation after being diagnosed with typhoid.

Bill Nighy leads a magical journey in the Norfolk Broads along England's holiday river, the River Bure; discovering a watery world where both wildlife and recreation go hand in hand.

Scientists take a look at animal species with the power to transform and restore grasslands.

A look at the extraordinary wildlife, landscapes and people of the Amazon, the world's greatest river; from boiling streams and transparent lagoons, to pink river dolphins and riotous river carnivals, its great size hides spectacular secrets.

A look at the astonishing wildlife, landscapes and people of the Nile, the world's longest river; from elephants and leopards, to extreme kayakers and ancient wonders, its great length is a lifeline for astonishing wildlife and cultures.

The Mississippi, from frozen waterfalls to time-traveling barges, from busy beavers to mysterious swamps, connects a continent like no other river. At the end of its 3,500-mile journey, it creates one of the biggest river deltas on the planet.

The animal families in Serengeti stick together, share food, and play around in the grasslands. The young ones get acquainted with the ways of the wild.

Uncover the profound significance and uncertain future of our rivers.

Twice the size of the British Isles, Borneo is the third largest island on Earth and home to possibly the greatest diversity of life of any island, from flying lizards sun bears to orangutans.

Get chills as winter descends, slowing down life on the bustling reef; meander with reef sharks and octopuses, visit a coral oasis atop an old shipwreck, and spot a banded snake eel's talent for identity theft when it disguises itself as a predator.

Exploring the softer side of Tasmanian devils; meeting a pioneering sea turtle and enjoying family dinner with Buttons, the deer; playing football with a bull.

Flapping around with Banksi the fruit bat and his human surrogate mom; eyeing a mischievous emu; celebrating a pig's rescue-versary; touring manatee heaven; learning to speak baboon with Dingani.

Get chills as winter descends, slowing down life on the bustling reef; meander with reef sharks and octopuses, visit a coral oasis atop an old shipwreck, and spot a banded snake eel's talent for identity theft when it disguises itself as a predator.

Exploring the softer side of Tasmanian devils; meeting a pioneering sea turtle and enjoying family dinner with Buttons, the deer; playing football with a bull.

Flapping around with Banksi the fruit bat and his human surrogate mom; eyeing a mischievous emu; celebrating a pig's rescue-versary; touring manatee heaven; learning to speak baboon with Dingani.

Beni faces a day of reckoning as all the forest school students are held back for a weigh-in; Alba is back in isolation after being diagnosed with typhoid.

Get chills as winter descends, slowing down life on the bustling reef; meander with reef sharks and octopuses, visit a coral oasis atop an old shipwreck, and spot a banded snake eel's talent for identity theft when it disguises itself as a predator.

Exploring the softer side of Tasmanian devils; meeting a pioneering sea turtle and enjoying family dinner with Buttons, the deer; playing football with a bull.

Flapping around with Banksi the fruit bat and his human surrogate mom; eyeing a mischievous emu; celebrating a pig's rescue-versary; touring manatee heaven; learning to speak baboon with Dingani.

Traveling the Dordogne River via traditional boats through the green heart of southwest France; drinking wine and hunting for truffles; riding a luxury cruiser to a lighthouse built for a king.

An in-depth look at the American shad on its epic journey upstream, back to its fresh water birthplace to spawn.

The bald eagle reigns supreme as the ultimate predator above the waters of Bras d'Or Lake on Canada's eastern shore.

A bobcat kitten needs Hope's help but this little orphan causes big headaches.

Traveling the Dordogne River via traditional boats through the green heart of southwest France; drinking wine and hunting for truffles; riding a luxury cruiser to a lighthouse built for a king.

An in-depth look at the American shad on its epic journey upstream, back to its fresh water birthplace to spawn.

The bald eagle reigns supreme as the ultimate predator above the waters of Bras d'Or Lake on Canada's eastern shore.

Rescued orphan Josh needs his broken wrist examined by the school vets, while Beni has a trip to the dentist to treat his bad breath.

Traveling the Dordogne River via traditional boats through the green heart of southwest France; drinking wine and hunting for truffles; riding a luxury cruiser to a lighthouse built for a king.

A southern African mangrove forest experiences the changes between high and low tide.

The Okavango Delta is home to a wide variety of African wildlife.

Penguins live on a tiny, urban cape in South Africa.

During the dry season, the quest for water governs the lives of the animals in South Africa.

Get chills as winter descends, slowing down life on the bustling reef; meander with reef sharks and octopuses, visit a coral oasis atop an old shipwreck, and spot a banded snake eel's talent for identity theft when it disguises itself as a predator.

Exploring the softer side of Tasmanian devils; meeting a pioneering sea turtle and enjoying family dinner with Buttons, the deer; playing football with a bull.

Flapping around with Banksi the fruit bat and his human surrogate mom; eyeing a mischievous emu; celebrating a pig's rescue-versary; touring manatee heaven; learning to speak baboon with Dingani.

Getting to know all 18 members of the penguin family, including the quirky ones.

A look at the extraordinary wildlife, landscapes and people of the Amazon, the world's greatest river; from boiling streams and transparent lagoons, to pink river dolphins and riotous river carnivals, its great size hides spectacular secrets.

Summer arrives and Gordon finds out that Tiny the bear cub has been abandoned by her mother.

Getting to know all 18 members of the penguin family, including the quirky ones.

A look at the extraordinary wildlife, landscapes and people of the Amazon, the world's greatest river; from boiling streams and transparent lagoons, to pink river dolphins and riotous river carnivals, its great size hides spectacular secrets.

Summer arrives and Gordon finds out that Tiny the bear cub has been abandoned by her mother.

Rescued orphan Josh needs his broken wrist examined by the school vets, while Beni has a trip to the dentist to treat his bad breath.

Getting to know all 18 members of the penguin family, including the quirky ones.

A look at the extraordinary wildlife, landscapes and people of the Amazon, the world's greatest river; from boiling streams and transparent lagoons, to pink river dolphins and riotous river carnivals, its great size hides spectacular secrets.

Summer arrives and Gordon finds out that Tiny the bear cub has been abandoned by her mother.

Rumoured to be the cleanest river in Europe, few dispute it's the coldest; cascading down from the Dinaric Alps in Serbia, it soon crosses the border into Bosnia Herzegovina, where marine biologist and fisherman Sanel Riđanović casts for salmon.

A plethora of creatures seek refuge from the rise and fall of the tide in Duncan's Cove and the Bay of Fundy.

A look at two very different insect species showcasing their expert pollination skills at Nova Scotia's Annapolis Valley; honey bees and monarch butterflies.

Hope Swinimer rescues, rehabilitates and releases thousands of animals while struggling to make ends meet.

Rumoured to be the cleanest river in Europe, few dispute it's the coldest; cascading down from the Dinaric Alps in Serbia, it soon crosses the border into Bosnia Herzegovina, where marine biologist and fisherman Sanel Riđanović casts for salmon.

A plethora of creatures seek refuge from the rise and fall of the tide in Duncan's Cove and the Bay of Fundy.

A look at two very different insect species showcasing their expert pollination skills at Nova Scotia's Annapolis Valley; honey bees and monarch butterflies.

The babysitters try to get Beni's diet under control; Malika shows off her passion for fashion; Darryl and Syahrini get steamy in the treetops; Cinta makes a watery discovery; two new babies arrive, one of whom is emaciated.

Rumoured to be the cleanest river in Europe, few dispute it's the coldest; cascading down from the Dinaric Alps in Serbia, it soon crosses the border into Bosnia Herzegovina, where marine biologist and fisherman Sanel Riđanović casts for salmon.

From a tick-infested rhino to the freshwater turtles who nip the insects off the giant beast, all life is connected; following the complex web of relationships between these species and more to see how each creature fits into one magical whole.

The Nile crocodile and hippopotamus are two of Africa's amphibious freshwater icons.

Explore the harsh realities that shape hippo life on Zambia's Luangwa River; meet a bull who serves as river master, a mother determined to protect her newborn calf and ancient rivals who fight to the death as the dry season reaches its apex.

A feeding frenzy for hungry predators at the Serengeti National Park as the Great Migration arrives triggered by seasonal rains.

Getting to know all 18 members of the penguin family, including the quirky ones.

A look at the extraordinary wildlife, landscapes and people of the Amazon, the world's greatest river; from boiling streams and transparent lagoons, to pink river dolphins and riotous river carnivals, its great size hides spectacular secrets.

Summer arrives and Gordon finds out that Tiny the bear cub has been abandoned by her mother.

Rejoining the team for some post-rainy-season drama as they search for Ferinha, Fera and Badalo, whose tracking collars are missing; meeting a new biologist, who helps Lizzie recollar the jaguars.

Explore community-run Reteti Elephant Sanctuary, where human surrogate moms offer survival lessons and nurture young elephants through play; bonding with trunkless Long'uro and seeing why Kelele's mysterious illness could delay his release.

Rejoining the team for some post-rainy-season drama as they search for Ferinha, Fera and Badalo, whose tracking collars are missing; meeting a new biologist, who helps Lizzie recollar the jaguars.

Explore community-run Reteti Elephant Sanctuary, where human surrogate moms offer survival lessons and nurture young elephants through play; bonding with trunkless Long'uro and seeing why Kelele's mysterious illness could delay his release.

The babysitters try to get Beni's diet under control; Malika shows off her passion for fashion; Darryl and Syahrini get steamy in the treetops; Cinta makes a watery discovery; two new babies arrive, one of whom is emaciated.

Rejoining the team for some post-rainy-season drama as they search for Ferinha, Fera and Badalo, whose tracking collars are missing; meeting a new biologist, who helps Lizzie recollar the jaguars.

Explore community-run Reteti Elephant Sanctuary, where human surrogate moms offer survival lessons and nurture young elephants through play; bonding with trunkless Long'uro and seeing why Kelele's mysterious illness could delay his release.

Tackling the grade 6 rapids and untamed waters of the Buller River on the west coast of New Zealand's South Island, blessed by a Māori elder of the Ngāti Apa ki te Rā Tō.

Animals that survive in cities.

Cape Breton Highlands National Park faces destruction by various species.

Preparations for Hope's open house are derailed when a patient goes missing; the event may be too successful for its own good.

Tackling the grade 6 rapids and untamed waters of the Buller River on the west coast of New Zealand's South Island, blessed by a Māori elder of the Ngāti Apa ki te Rā Tō.

Animals that survive in cities.

Cape Breton Highlands National Park faces destruction by various species.

Difficult quarantine student Taymur has a breakthrough and starts to embrace his jungle school lesson; serial truant Luthy skips class again and gives the staff a run for their money.

Tackling the grade 6 rapids and untamed waters of the Buller River on the west coast of New Zealand's South Island, blessed by a Māori elder of the Ngāti Apa ki te Rā Tō.

Introducing a cast of charismatic animals to reveal the remarkable strategies they use to survive, and even thrive, in winter - for animals this is the toughest time of year, and preparations start early.

Entertainer Cher and a team of vets, trainers, and more lead a large-scale effort to move a bull elephant from a rundown zoo to a faraway wildlife sanctuary.

Giles cares for a sun bear cub while building a rescue center in Laos.

Giles helps two moon bear cubs and is shocked with news at the sanctuary.

Rejoining the team for some post-rainy-season drama as they search for Ferinha, Fera and Badalo, whose tracking collars are missing; meeting a new biologist, who helps Lizzie recollar the jaguars.

Explore community-run Reteti Elephant Sanctuary, where human surrogate moms offer survival lessons and nurture young elephants through play; bonding with trunkless Long'uro and seeing why Kelele's mysterious illness could delay his release.

An international team of scientists investigates overfishing and how close we are to a global crash in fish populations.

The oceans have hidden the true depth of their hunters' inventiveness; but, wildlife photographers below and above the water's surface are capturing images that show off their prowess; discover their secrets as we travel the world.

Looking inside the secret world of the fearless, often misunderstood sloth bear; travelling to Sri Lanka and discovering how this fierce, shaggy animal fights off leopards and other deadly rivals, all while trying to secure enough protein to survive.

An international team of scientists investigates overfishing and how close we are to a global crash in fish populations.

The oceans have hidden the true depth of their hunters' inventiveness; but, wildlife photographers below and above the water's surface are capturing images that show off their prowess; discover their secrets as we travel the world.

Looking inside the secret world of the fearless, often misunderstood sloth bear; travelling to Sri Lanka and discovering how this fierce, shaggy animal fights off leopards and other deadly rivals, all while trying to secure enough protein to survive.

Difficult quarantine student Taymur has a breakthrough and starts to embrace his jungle school lesson; serial truant Luthy skips class again and gives the staff a run for their money.

An international team of scientists investigates overfishing and how close we are to a global crash in fish populations.

The oceans have hidden the true depth of their hunters' inventiveness; but, wildlife photographers below and above the water's surface are capturing images that show off their prowess; discover their secrets as we travel the world.

Looking inside the secret world of the fearless, often misunderstood sloth bear; travelling to Sri Lanka and discovering how this fierce, shaggy animal fights off leopards and other deadly rivals, all while trying to secure enough protein to survive.

The St. Lawrence River is one that forged North America, allowing ships to traverse the continent; the adventure begins in Canada's first capital city of Kingston and near Canada's second-largest city of Montreal.

Marshes and bogs are home to the endangered Blanding's Turtle, but the habitat is disappearing.

The complicated relationships of crustaceans.

A moose on the loose raises a ruckus; a permanent resident becomes a lovable nuisance.

The St. Lawrence River is one that forged North America, allowing ships to traverse the continent; the adventure begins in Canada's first capital city of Kingston and near Canada's second-largest city of Montreal.

Marshes and bogs are home to the endangered Blanding's Turtle, but the habitat is disappearing.

The complicated relationships of crustaceans.

Six graduates from jungle school are finally set to be freed into the wild from the pre-release islands after an arduous journey by road and river into the heart of Borneo.

The St. Lawrence River is one that forged North America, allowing ships to traverse the continent; the adventure begins in Canada's first capital city of Kingston and near Canada's second-largest city of Montreal.

Koalas live in isolated forests in east and southeast Australia.

Koala behavior changes dramatically during mating season.

Seven daredevil filmmakers try to capture a shark shot; see the preparation and planning that goes into achieving the desired footage.

In September, one side of Sri Lanka is drenched in monsoons, while the other withers in drought, creating two different habitats and diversity of life.

An international team of scientists investigates overfishing and how close we are to a global crash in fish populations.

The oceans have hidden the true depth of their hunters' inventiveness; but, wildlife photographers below and above the water's surface are capturing images that show off their prowess; discover their secrets as we travel the world.

Looking inside the secret world of the fearless, often misunderstood sloth bear; travelling to Sri Lanka and discovering how this fierce, shaggy animal fights off leopards and other deadly rivals, all while trying to secure enough protein to survive.

Take a deep dive into animal playtime and see how many of these activities are really learning opportunities in disguise; find out why hamsters love to run in a wheel, how dogs bone up on pack rules and the real meaning behind a rabbit's hop.

Scientists investigate the lives of Australia's animals, from koala bears to fruit bats to kangaroos.

In Sierra Leone, a young chimpanzee deals with a potentially cancerous growth on her abdomen; wildlife vets deliver a diagnosis then get a fright mid-surgery.

Take a deep dive into animal playtime and see how many of these activities are really learning opportunities in disguise; find out why hamsters love to run in a wheel, how dogs bone up on pack rules and the real meaning behind a rabbit's hop.

Scientists investigate the lives of Australia's animals, from koala bears to fruit bats to kangaroos.

In Sierra Leone, a young chimpanzee deals with a potentially cancerous growth on her abdomen; wildlife vets deliver a diagnosis then get a fright mid-surgery.

Six graduates from jungle school are finally set to be freed into the wild from the pre-release islands after an arduous journey by road and river into the heart of Borneo.

Take a deep dive into animal playtime and see how many of these activities are really learning opportunities in disguise; find out why hamsters love to run in a wheel, how dogs bone up on pack rules and the real meaning behind a rabbit's hop.

Scientists investigate the lives of Australia's animals, from koala bears to fruit bats to kangaroos.

In Sierra Leone, a young chimpanzee deals with a potentially cancerous growth on her abdomen; wildlife vets deliver a diagnosis then get a fright mid-surgery.

Navigating the historic Potomac River from West Virginia to Chesapeake Bay, passing through Washington, D.C. and the national monuments and ending at George Washington's Mount Vernon estate.

Wild horses and ponies on the last of France's overseas territory.

Invasive species like rabbits and starlings can have a negative impact on native species.

The mercury drops, but things heat up for Hope; an elusive creature is caught on tape; an impaled gull inspires a dramatic rescue.

Navigating the historic Potomac River from West Virginia to Chesapeake Bay, passing through Washington, D.C. and the national monuments and ending at George Washington's Mount Vernon estate.

Wild horses and ponies on the last of France's overseas territory.

Invasive species like rabbits and starlings can have a negative impact on native species.

Big changes are afoot for some of the pupils at Orangutan Jungle School, where orphaned orangutans learn the forest skills they need to survive in the wild; four new arrivals join the nursery classes and some familiar faces move up a grade.

Navigating the historic Potomac River from West Virginia to Chesapeake Bay, passing through Washington, D.C. and the national monuments and ending at George Washington's Mount Vernon estate.

Palau is home to large manta rays, WWII wrecks, and a coral reef.

Raja Ampat in the Indonesian archipelago is home to diverse marine life, including manta rays.

The Indonesian archipelago lies has the highest number of coral and fish species on earth.

Fascinating creatures thrive in the muck.

Take a deep dive into animal playtime and see how many of these activities are really learning opportunities in disguise; find out why hamsters love to run in a wheel, how dogs bone up on pack rules and the real meaning behind a rabbit's hop.

Scientists investigate the lives of Australia's animals, from koala bears to fruit bats to kangaroos.

In Sierra Leone, a young chimpanzee deals with a potentially cancerous growth on her abdomen; wildlife vets deliver a diagnosis then get a fright mid-surgery.

In some of the most-remote regions on the planet, researchers dive deep and brave danger to unlock secret shark behaviors; they fight for the protection of these supreme predators before it's too late.

During spring on the Gomoti River, cheetah mother Phefo and lion mother Tshaba teach their cubs' survival skills; they protect their young from big male cats; lion king Molelo fights battles; leopard Senatia works to secure his legacy.

Tracking Molelo's pride, who are exhausted when the winter floods arrive and witnessing an encounter that gives leopard mum Sephiri a decision to make.

In some of the most-remote regions on the planet, researchers dive deep and brave danger to unlock secret shark behaviors; they fight for the protection of these supreme predators before it's too late.

During spring on the Gomoti River, cheetah mother Phefo and lion mother Tshaba teach their cubs' survival skills; they protect their young from big male cats; lion king Molelo fights battles; leopard Senatia works to secure his legacy.

Tracking Molelo's pride, who are exhausted when the winter floods arrive and witnessing an encounter that gives leopard mum Sephiri a decision to make.

Big changes are afoot for some of the pupils at Orangutan Jungle School, where orphaned orangutans learn the forest skills they need to survive in the wild; four new arrivals join the nursery classes and some familiar faces move up a grade.

In some of the most-remote regions on the planet, researchers dive deep and brave danger to unlock secret shark behaviors; they fight for the protection of these supreme predators before it's too late.

During spring on the Gomoti River, cheetah mother Phefo and lion mother Tshaba teach their cubs' survival skills; they protect their young from big male cats; lion king Molelo fights battles; leopard Senatia works to secure his legacy.

Tracking Molelo's pride, who are exhausted when the winter floods arrive and witnessing an encounter that gives leopard mum Sephiri a decision to make.

A journey down one of the wild rivers in the world, the Yukon; the unusual trip starts in an aircraft piloted by a painter and the odyssey ends with a visit to a graveyard of disintegrating rear-wheel steamers.

Canada's east coast experiences all four seasons.

Overpopulation of deer in Hampton, N.B.

Hope revisits a completely rebuilt rehab and reveals new plans; Hope and Barry discover a problem plaguing massive marine mammals.

A journey down one of the wild rivers in the world, the Yukon; the unusual trip starts in an aircraft piloted by a painter and the odyssey ends with a visit to a graveyard of disintegrating rear-wheel steamers.

Canada's east coast experiences all four seasons.

Overpopulation of deer in Hampton, N.B.

Recent nursery graduates Jelapat, Talaken, Bawan and Rona join their classmates at their new classroom; Dilla unexpectedly gives birth at midnight, but the delivery does not go smoothly.

A journey down one of the wild rivers in the world, the Yukon; the unusual trip starts in an aircraft piloted by a painter and the odyssey ends with a visit to a graveyard of disintegrating rear-wheel steamers.

Discover how weirdness is baked into some animals' DNA from birth; check out the bowerbird's mate-attracting dance moves, the Christmas Island crab's traffic-dodging prowess and the sockeye salmon's uphill swimming skills!

A look at the supercharged abilities that give some animals an edge in life; discovering fireflies' flirty flashes, the tarsier's incredible night vision, the mantis shrimp' knockout punch and the saltwater croc's prey-detecting pressure sensors.

Nature's most wanted species don't get the respect they deserve, including the great white shark's electrical sensors, the razor-sharp limbs of the dead leaf mantis and the zombie-creating powers of cordyceps fungi.

Explore the partnership between clownfish and anemones; watch oxpeckers keep savannah residents healthy; review the agreements of dung beetles and pitcher plants.

In some of the most-remote regions on the planet, researchers dive deep and brave danger to unlock secret shark behaviors; they fight for the protection of these supreme predators before it's too late.

During spring on the Gomoti River, cheetah mother Phefo and lion mother Tshaba teach their cubs' survival skills; they protect their young from big male cats; lion king Molelo fights battles; leopard Senatia works to secure his legacy.

Tracking Molelo's pride, who are exhausted when the winter floods arrive and witnessing an encounter that gives leopard mum Sephiri a decision to make.

Competition is inevitable when it comes to surviving in Serengeti's horrific environment. Not everyone can get their favorite food, preferred mate, or the best territory.

Our planet's freshwater lakes are cradles of life.

Hawaii is the most remote island chain on Earth, and its shores are hard to reach. But for the hardy creatures that can make it here, like the waterfall climbing fish, carnivorous caterpillar and Laysan albatross, a land of opportunity awaits.

Competition is inevitable when it comes to surviving in Serengeti's horrific environment. Not everyone can get their favorite food, preferred mate, or the best territory.

Our planet's freshwater lakes are cradles of life.

Hawaii is the most remote island chain on Earth, and its shores are hard to reach. But for the hardy creatures that can make it here, like the waterfall climbing fish, carnivorous caterpillar and Laysan albatross, a land of opportunity awaits.

Recent nursery graduates Jelapat, Talaken, Bawan and Rona join their classmates at their new classroom; Dilla unexpectedly gives birth at midnight, but the delivery does not go smoothly.

Competition is inevitable when it comes to surviving in Serengeti's horrific environment. Not everyone can get their favorite food, preferred mate, or the best territory.

Our planet's freshwater lakes are cradles of life.

Hawaii is the most remote island chain on Earth, and its shores are hard to reach. But for the hardy creatures that can make it here, like the waterfall climbing fish, carnivorous caterpillar and Laysan albatross, a land of opportunity awaits.

Meandering through the black waters of a primordial river immortalized in a folk song.

Marine life in the waters surrounding Brier Island in Nova Scotia includes dolphins and humpback whales.

The Grasslands National Park protects the North American mixed grass prairie.

Hope rallies the team to release a herd of white-tailed deer; winter brings a mysterious influx of snowy owls.

Meandering through the black waters of a primordial river immortalized in a folk song.

Marine life in the waters surrounding Brier Island in Nova Scotia includes dolphins and humpback whales.

The Grasslands National Park protects the North American mixed grass prairie.

Beni and Lala are confined to the clinic following an accident; bullied Kesi causes concern for the team; Clara and her daughter, Clarita, are chosen for release back into the wild.

Meandering through the black waters of a primordial river immortalized in a folk song.

Hippos, elephants, lions and buffalo are drawn to the Zambezi's wild waters, which grow from a tiny trickle in Zambia to the thundering Victoria Falls.

The Danube River, which stretches from the Alps to the Black Sea, supports a surprising range of wildlife and is coping with years of human impact. (2 of 3).

The Yukon River boasts one of the longest salmon runs in the world; from musk ox to ice bears, there is a rich variety of life that call this frozen river home.

Australia's Great Barrier Reef is one of the natural wonders of the world and the largest living structure on the planet; Monty Halls explores the complexity of the reef itself and the wildlife that lives on it.

Competition is inevitable when it comes to surviving in Serengeti's horrific environment. Not everyone can get their favorite food, preferred mate, or the best territory.

Our planet's freshwater lakes are cradles of life.

Hawaii is the most remote island chain on Earth, and its shores are hard to reach. But for the hardy creatures that can make it here, like the waterfall climbing fish, carnivorous caterpillar and Laysan albatross, a land of opportunity awaits.

The ultimate battle for dominance as scientists try to pick out the alpha male in a pack of 100-plus great white sharks off the New Zealand coast.

Visiting Penny the pigeon and her rescuer; getting a buzz from a refugee who finds comfort in beekeeping; diving with a shark dancer.

Embracing an invasive nutria who's become a part of the family; paddling around with Gumbo the goose; visiting a blind hedgehog and his human chum; exploring a swimmer's bond with wild gray seals.

The ultimate battle for dominance as scientists try to pick out the alpha male in a pack of 100-plus great white sharks off the New Zealand coast.

Visiting Penny the pigeon and her rescuer; getting a buzz from a refugee who finds comfort in beekeeping; diving with a shark dancer.

Embracing an invasive nutria who's become a part of the family; paddling around with Gumbo the goose; visiting a blind hedgehog and his human chum; exploring a swimmer's bond with wild gray seals.

Beni and Lala are confined to the clinic following an accident; bullied Kesi causes concern for the team; Clara and her daughter, Clarita, are chosen for release back into the wild.

The ultimate battle for dominance as scientists try to pick out the alpha male in a pack of 100-plus great white sharks off the New Zealand coast.

Visiting Penny the pigeon and her rescuer; getting a buzz from a refugee who finds comfort in beekeeping; diving with a shark dancer.

Embracing an invasive nutria who's become a part of the family; paddling around with Gumbo the goose; visiting a blind hedgehog and his human chum; exploring a swimmer's bond with wild gray seals.

Elk and moose live beside bears and wolves where the mountains cross international borders.

Despite being the second smallest park in Canada, Point Pelee bird watching reputation is huge.

The civilization of the first and finest national park in Canada, is surrounded by untamed wildlife.

Hope's first orphaned mammal arrives earlier than ever; a mysterious patient from last year returns.

Elk and moose live beside bears and wolves where the mountains cross international borders.

Despite being the second smallest park in Canada, Point Pelee bird watching reputation is huge.

The civilization of the first and finest national park in Canada, is surrounded by untamed wildlife.

Beni and Lala are going stir-crazy in the sick bay, but they must recover before returning to the rough and tumble of class; at forest school, a termite-foraging lesson inspires class clown Valentino to make a finger-licking discovery.

Elk and moose live beside bears and wolves where the mountains cross international borders.

The Blue Lagoon is an extraordinary cove on South Africa's west coast.

The vast flood plains of the Chobe river.

Hippos, crocodiles, and other creatures call the waterways of Africa home.

The creatures of the wetlands.

The ultimate battle for dominance as scientists try to pick out the alpha male in a pack of 100-plus great white sharks off the New Zealand coast.

Visiting Penny the pigeon and her rescuer; getting a buzz from a refugee who finds comfort in beekeeping; diving with a shark dancer.

Embracing an invasive nutria who's become a part of the family; paddling around with Gumbo the goose; visiting a blind hedgehog and his human chum; exploring a swimmer's bond with wild gray seals.

Introducing a cast of charismatic animals to reveal the remarkable strategies they use to survive, and even thrive, in winter - for animals this is the toughest time of year, and preparations start early.

A look at the astonishing wildlife, landscapes and people of the Nile, the world's longest river; from elephants and leopards, to extreme kayakers and ancient wonders, its great length is a lifeline for astonishing wildlife and cultures.

It is autumn and Gordon finds out that Hope is back with her mother.

Introducing a cast of charismatic animals to reveal the remarkable strategies they use to survive, and even thrive, in winter - for animals this is the toughest time of year, and preparations start early.

A look at the astonishing wildlife, landscapes and people of the Nile, the world's longest river; from elephants and leopards, to extreme kayakers and ancient wonders, its great length is a lifeline for astonishing wildlife and cultures.

It is autumn and Gordon finds out that Hope is back with her mother.

Beni and Lala are going stir-crazy in the sick bay, but they must recover before returning to the rough and tumble of class; at forest school, a termite-foraging lesson inspires class clown Valentino to make a finger-licking discovery.

Introducing a cast of charismatic animals to reveal the remarkable strategies they use to survive, and even thrive, in winter - for animals this is the toughest time of year, and preparations start early.

A look at the astonishing wildlife, landscapes and people of the Nile, the world's longest river; from elephants and leopards, to extreme kayakers and ancient wonders, its great length is a lifeline for astonishing wildlife and cultures.

It is autumn and Gordon finds out that Hope is back with her mother.

Animals living in the harsh conditions of the mountain peaks.

The Bruce Peninsula is the largest natural landscape remaining in Southern Ontario.

The Pacific Rim National Park Reserve is one of Canada's most beautiful and powerful parks.

A muskrat trapped in a fence needs Hope's help and slippery patients give the team a tough time.

Animals living in the harsh conditions of the mountain peaks.

The Bruce Peninsula is the largest natural landscape remaining in Southern Ontario.

The Pacific Rim National Park Reserve is one of Canada's most beautiful and powerful parks.

Three-year-old Wine ditches lessons to make a remarkable new friend, as she bonds with a young macaque; two refugees from a Thai circus, young mother Sampit and her son Sawadee, get a second chance at living semi-wild on a pre- release island.

Animals living in the harsh conditions of the mountain peaks.

In Samburu, matriarch Anastasia turns her elephant herd north after a local river dries up; cheetah mom Kuleta evades a crafty pack of hyenas in Naboisho; checking in on wild dog Phoenix and her new litter in Laikipia.

How elephants dig wells; a sudden river-filling downpour; cheetah Kuleta loses one of her cubs to lions; wild dog Phoenix faces off with a hyena mob.

Anastasia's herd splits to protect two precious elephant calves; Kuleta retakes territory for her remaining cheetah cubs; Phoenix searches for a new mate; the skies open up and rain begins to heal the parched land.

Meeting the innovative teams working to preserve and protect Kenya's wildlife; Save the Elephants' radio-tracking-collar system; a drone that monitors wild dog packs; a local team of Maasai cheetah trackers.

Introducing a cast of charismatic animals to reveal the remarkable strategies they use to survive, and even thrive, in winter - for animals this is the toughest time of year, and preparations start early.

A look at the astonishing wildlife, landscapes and people of the Nile, the world's longest river; from elephants and leopards, to extreme kayakers and ancient wonders, its great length is a lifeline for astonishing wildlife and cultures.

It is autumn and Gordon finds out that Hope is back with her mother.