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.

Dipping into North America's southern coastal waters, where squid mate, sea turtles nest and mobula rays take flight for the sake of romance; flying a drone with Lizzie as she swoops in for a breath sample from a blue whale.

Lizzie swims through coral reefs, digs for ancient fossils and treks through jungles on tropical shores; prowl with jaguars that stalk a Costa Rican beach and meet some big sharks.

Going up against infant Celia's case of malaria and spotting a thief in the food store.

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.

Dipping into North America's southern coastal waters, where squid mate, sea turtles nest and mobula rays take flight for the sake of romance; flying a drone with Lizzie as she swoops in for a breath sample from a blue whale.

Lizzie swims through coral reefs, digs for ancient fossils and treks through jungles on tropical shores; prowl with jaguars that stalk a Costa Rican beach and meet some big sharks.

The wild counterparts of domesticated species.

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

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

A look at the care, cleaning and feeding of the animals; a patient refuses to leave.

The wild counterparts of domesticated species.

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

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

Tracking down Lahei, who's gone AWOL; seeing who earns their post-college freedom.

Contemplate shark community hierarchies and discover how they socialize.

Drop in at a pit stop for great whites and search for a north-south connection.

Aim for harmonious coexistence in spots where human and shark worlds collide.

Hammerheads, Galápagos sharks, rays, and other species populate the waters of Cocos Island.

Stunning underwater video taken from the wildest expeditions of the world's greatest dive shops highlight the ocean's most spectacular species.

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.

Dipping into North America's southern coastal waters, where squid mate, sea turtles nest and mobula rays take flight for the sake of romance; flying a drone with Lizzie as she swoops in for a breath sample from a blue whale.

Lizzie swims through coral reefs, digs for ancient fossils and treks through jungles on tropical shores; prowl with jaguars that stalk a Costa Rican beach and meet some big sharks.

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

All airborne creatures embark on remarkable journeys through the air; some routes are short and others span across hundreds of miles.

Chris Packham reveals some of the cleverest animal communicators on the planet; for decades, people have longed to emulate Dr. Dolittle and be able to understand what animals are communicating to one another.

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

All airborne creatures embark on remarkable journeys through the air; some routes are short and others span across hundreds of miles.

Chris Packham reveals some of the cleverest animal communicators on the planet; for decades, people have longed to emulate Dr. Dolittle and be able to understand what animals are communicating to one another.

Tracking down Lahei, who's gone AWOL; seeing who earns their post-college freedom.

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

All airborne creatures embark on remarkable journeys through the air; some routes are short and others span across hundreds of miles.

Chris Packham reveals some of the cleverest animal communicators on the planet; for decades, people have longed to emulate Dr. Dolittle and be able to understand what animals are communicating to one another.

Some animals use sheer numbers to infest areas and control new territory.

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.

Hope says goodbye to two celebrated patients; the grim reality of wildlife rehabilitation.

Some animals use sheer numbers to infest areas and control new territory.

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.

Congratulating the new Orangutan Jungle School graduates, who aren't all spring chickens; following the convoy to the release site, where the team bids their friends a poignant farewell; enjoying the celebrations as Molly and Bumi move up a grade.

The course of South Africa's Orange River.

The Luangwa River winds through the savannahs of Zambia; a family of elephants journeys through the bush; a young calf struggles to master the art of using his unwieldy trunk.

In the Luangwa Valley, some of the largest animals on earth live side by side; Elephant, giraffe, buffalo, hippo and Nile crocodile; They are the heavyweights.

Liuwa Plains is a place of extremes. For half the year, it's a dry barren plain where only the toughest survive and for the other half, it's a paradise of waterholes.

The Luangwa River belongs to the hippos. The world's largest concentrations of hippos are found here. They spend their days submerged, keeping cool in the hot sun.

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

All airborne creatures embark on remarkable journeys through the air; some routes are short and others span across hundreds of miles.

Chris Packham reveals some of the cleverest animal communicators on the planet; for decades, people have longed to emulate Dr. Dolittle and be able to understand what animals are communicating to one another.

The pride tries to hunt down adequate food as drought conditions push them and their prey dangerously close to death; Einstein adapts to solo life, then assesses the damage after new mom Kalwezi fights for her cubs' lives.

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.

Lizzie and veterinarian Joares scramble to collar more jaguars amid storms, floods, and power outages.

The pride tries to hunt down adequate food as drought conditions push them and their prey dangerously close to death; Einstein adapts to solo life, then assesses the damage after new mom Kalwezi fights for her cubs' lives.

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.

Lizzie and veterinarian Joares scramble to collar more jaguars amid storms, floods, and power outages.

Congratulating the new Orangutan Jungle School graduates, who aren't all spring chickens; following the convoy to the release site, where the team bids their friends a poignant farewell; enjoying the celebrations as Molly and Bumi move up a grade.

The pride tries to hunt down adequate food as drought conditions push them and their prey dangerously close to death; Einstein adapts to solo life, then assesses the damage after new mom Kalwezi fights for her cubs' lives.

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.

Lizzie and veterinarian Joares scramble to collar more jaguars amid storms, floods, and power outages.

Animals seek protection from threats in large numbers and remote areas.

This oldest National Park in the Canadian Maritimes is home to the highest density of moose in the world.

The Torngat Mountains National Park was set up in part to return the aboriginal people to their birthright.

Hope prepares for one of the most important days of the year; a violent storm threatens the event.

Animals seek protection from threats in large numbers and remote areas.

This oldest National Park in the Canadian Maritimes is home to the highest density of moose in the world.

The Torngat Mountains National Park was set up in part to return the aboriginal people to their birthright.

An introduction to some of the big characters including "class clown" Valentino and "Big Boy" Beni; an emergency arrival of teenage mom Clara and her baby Clarita; vets round up the older orangutans, who are now ready to be released.

Iceland is the world's largest volcanic island and new ground is born daily.

Iceland's volcanoes generate one third of earth's land-based lava, but the land was sculpted by ice.

The highest tides in the world are found in the Bay of Fundy on Canada's east coast.

Along the west coast of Great Britain, the world's longest uninterrupted footpath forges through more than 800 miles of breathtaking scenery; the diverse landscape of the Welsh coast is a geological treasure.

Ireland is small but epic in wonder; surrounded by the Atlantic Ocean, from the Cliffs of Moher to the extraordinary Giant's Causeway, this land has been shaped and reshaped by both the power of water and violent geological forces.

The pride tries to hunt down adequate food as drought conditions push them and their prey dangerously close to death; Einstein adapts to solo life, then assesses the damage after new mom Kalwezi fights for her cubs' lives.

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.

Lizzie and veterinarian Joares scramble to collar more jaguars amid storms, floods, and power outages.

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.

Chase three young gazelles as they navigate the perils of life in the Serengeti.

Some animals use sheer numbers to infest areas and control new territory.

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.

Chase three young gazelles as they navigate the perils of life in the Serengeti.

Some animals use sheer numbers to infest areas and control new territory.

An introduction to some of the big characters including "class clown" Valentino and "Big Boy" Beni; an emergency arrival of teenage mom Clara and her baby Clarita; vets round up the older orangutans, who are now ready to be released.

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.

Chase three young gazelles as they navigate the perils of life in the Serengeti.

Some animals use sheer numbers to infest areas and control new territory.

Many species migrate in massive numbers.

Riding Mountain National Park in Manitoba.

Fundy National Park in southern New Brunswick.

Dr. Barry gets married; an eagle needs surgery; Hope releases the deer that arrived as fawns.

Many species migrate in massive numbers.

Riding Mountain National Park in Manitoba.

Fundy National Park in southern New Brunswick.

"Class Clown" Valentino is busy showing off; the staff decide that "Big Boy" Beni needs to lose weight; teenage mom Clara and her baby Clarita face a return to island life; they welcome a new pupil: Alba, the only reported albino orangutan.

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.

Experts examine whether female or male sharks are more dominant, testing jumping, boldness and strength in a series of challenges.

Wake up with a new generation of lion cubs, zebra calves, and hyena pups on the African savannah, where every sunrise brings hope and new challenges. Celebrate their first strides toward independence in a land where every step is a test of survival.

Koalas live in isolated forests in east and southeast Australia.

Koala behavior changes dramatically during mating season.

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.

Chase three young gazelles as they navigate the perils of life in the Serengeti.

Some animals use sheer numbers to infest areas and control new territory.

A cat named Lovebug requires emergency surgery after being shot in the leg; a Pomeranian named Cheeka has a bad cough; Savannah and Dayle take a trip to learn some horse-handling skills from a well-known Métis expert.

Brooke demonstrates the ever-important job of vet techs as she helps a dog named Charlie who was injured in a dogfight; Dr. Savannah treats a dog who was kicked by a horse; Brooke and Savannah then head over to a spay and neuter clinic in Sturgeon Lake.

Exploring pine forests, coral reefs and the Everglades to find out what scientists are doing to protect alligators, mini deer, manatees and other vulnerable species from human and animal invaders.

Endangered carnivores of Africa.

A cat named Lovebug requires emergency surgery after being shot in the leg; a Pomeranian named Cheeka has a bad cough; Savannah and Dayle take a trip to learn some horse-handling skills from a well-known Métis expert.

Brooke demonstrates the ever-important job of vet techs as she helps a dog named Charlie who was injured in a dogfight; Dr. Savannah treats a dog who was kicked by a horse; Brooke and Savannah then head over to a spay and neuter clinic in Sturgeon Lake.

Exploring pine forests, coral reefs and the Everglades to find out what scientists are doing to protect alligators, mini deer, manatees and other vulnerable species from human and animal invaders.

Endangered carnivores of Africa.

"Class Clown" Valentino is busy showing off; the staff decide that "Big Boy" Beni needs to lose weight; teenage mom Clara and her baby Clarita face a return to island life; they welcome a new pupil: Alba, the only reported albino orangutan.

A cat named Lovebug requires emergency surgery after being shot in the leg; a Pomeranian named Cheeka has a bad cough; Savannah and Dayle take a trip to learn some horse-handling skills from a well-known Métis expert.

Brooke demonstrates the ever-important job of vet techs as she helps a dog named Charlie who was injured in a dogfight; Dr. Savannah treats a dog who was kicked by a horse; Brooke and Savannah then head over to a spay and neuter clinic in Sturgeon Lake.

Exploring pine forests, coral reefs and the Everglades to find out what scientists are doing to protect alligators, mini deer, manatees and other vulnerable species from human and animal invaders.

Endangered carnivores of Africa.

Cabo Pulmo is the site of an extraordinary marine recovery.

Terra Nova National Park on the Newfoundland coast is a beautiful enigma with a rugged forest.

Quttinirpaaq National Park is affected by climate change.

Hope is taking on more animals and more responsibilities, but there are concerns about Hope's own health.

Cabo Pulmo is the site of an extraordinary marine recovery.

Terra Nova National Park on the Newfoundland coast is a beautiful enigma with a rugged forest.

Quttinirpaaq National Park is affected by climate change.

Kasper, who is 90kgs, somehow eludes the capture team and climbs 30 meters high in a tree; Beni's food theft and ongoing weight gain starts causing serious concern for his health.

A troop of rescue center monkeys that have adopted a litter of stray kittens; a loyal dog helping a rescued raccoon overcome her fears; an emu raised by Irish setters.

Meet more Amazing Animal Friends, including ranch manager Barclay, a Great Dane who happens to be a gifted horse whisperer. In Africa, a tiny marmoset called Thor has become obsessed with two young rescued mongooses.

With the help of some surprising creatures from around the world, we'll discover how animals take to the air, defying the force all airborne animals must conquer - gravity.

We are up and away with the world of powered flight - revealing why peregrine falcons can top 200 miles an hour, how a hummingbird is a slave to its own rather manic lifestyle, and that the albatross's secret to flying for free... is its nose!

In the busy skies above our planet we'll meet a creature that creates sound out of thin air with the world's fastest courtship display and arguably the world's most aggressive bird, harnessing cold aggression to protect its patch of sky.

A cat named Lovebug requires emergency surgery after being shot in the leg; a Pomeranian named Cheeka has a bad cough; Savannah and Dayle take a trip to learn some horse-handling skills from a well-known Métis expert.

Brooke demonstrates the ever-important job of vet techs as she helps a dog named Charlie who was injured in a dogfight; Dr. Savannah treats a dog who was kicked by a horse; Brooke and Savannah then head over to a spay and neuter clinic in Sturgeon Lake.

Exploring pine forests, coral reefs and the Everglades to find out what scientists are doing to protect alligators, mini deer, manatees and other vulnerable species from human and animal invaders.

Endangered carnivores of Africa.

Taking a deep dive into the teeming waters of the Hauraki Gulf, near Auckland, New Zealand, and exploring a true paradise for ocean creatures: glimpsing a stealthy manta ray, enjoying dolphin antics and admiring a kaleidoscope of tropical fish.

Soaring above the Iberian Peninsula for a closer look at the griffon vulture: the biggest, most aggressive of the region's carrion raptors; glimpsing nests where baby vultures are nurtured for up to six months.

Ascending to new heights in pursuit of the wily mountain goat; discovering the best-kept secrets of these nimble climbers, whose capable hooves and perfectly adapted anatomy make even the best-equipped mountaineer jealous.

Going undercover to meet the ever-changing chameleon, a master of disguise with amazing physical prowess; a close look at Juan Antonio's sketchbook depicts this lizard's secrets, including enhanced vision, sticky feet, and a prehensile tail.

Pondering the intersection of myth and reality regarding the secretive stork; learning about the surprisingly complex life of this graceful bird of fertility myths; Juan Antonio draws one in all its wild glory.

Taking a deep dive into the teeming waters of the Hauraki Gulf, near Auckland, New Zealand, and exploring a true paradise for ocean creatures: glimpsing a stealthy manta ray, enjoying dolphin antics and admiring a kaleidoscope of tropical fish.

Soaring above the Iberian Peninsula for a closer look at the griffon vulture: the biggest, most aggressive of the region's carrion raptors; glimpsing nests where baby vultures are nurtured for up to six months.

Ascending to new heights in pursuit of the wily mountain goat; discovering the best-kept secrets of these nimble climbers, whose capable hooves and perfectly adapted anatomy make even the best-equipped mountaineer jealous.

Going undercover to meet the ever-changing chameleon, a master of disguise with amazing physical prowess; a close look at Juan Antonio's sketchbook depicts this lizard's secrets, including enhanced vision, sticky feet, and a prehensile tail.

Pondering the intersection of myth and reality regarding the secretive stork; learning about the surprisingly complex life of this graceful bird of fertility myths; Juan Antonio draws one in all its wild glory.

Kasper, who is 90kgs, somehow eludes the capture team and climbs 30 meters high in a tree; Beni's food theft and ongoing weight gain starts causing serious concern for his health.

Taking a deep dive into the teeming waters of the Hauraki Gulf, near Auckland, New Zealand, and exploring a true paradise for ocean creatures: glimpsing a stealthy manta ray, enjoying dolphin antics and admiring a kaleidoscope of tropical fish.

Soaring above the Iberian Peninsula for a closer look at the griffon vulture: the biggest, most aggressive of the region's carrion raptors; glimpsing nests where baby vultures are nurtured for up to six months.

Ascending to new heights in pursuit of the wily mountain goat; discovering the best-kept secrets of these nimble climbers, whose capable hooves and perfectly adapted anatomy make even the best-equipped mountaineer jealous.

Going undercover to meet the ever-changing chameleon, a master of disguise with amazing physical prowess; a close look at Juan Antonio's sketchbook depicts this lizard's secrets, including enhanced vision, sticky feet, and a prehensile tail.

Pondering the intersection of myth and reality regarding the secretive stork; learning about the surprisingly complex life of this graceful bird of fertility myths; Juan Antonio draws one in all its wild glory.

The island nation of Palau created the first shark sanctuary and the largest marine sanctuary.

Visitors from around the world come to La Maurice National Park each fall when the leaves change.

The Gulf Island National Park sits between the development of Vancouver Island and British Columbia.

An old patient gets a second chance; a pregnant porcupine; Hope has surgery.

The island nation of Palau created the first shark sanctuary and the largest marine sanctuary.

Visitors from around the world come to La Maurice National Park each fall when the leaves change.

The Gulf Island National Park sits between the development of Vancouver Island and British Columbia.

Valentino, Yutris and the rest of group two have fun as they visit group three's flooded classroom; three quarantine infants get the results of their TB tests; the residents of Bangamat Island do not welcome newcomers leading to a confrontation.

Florida has the most tidal shoreline in the contiguous United States.

Nova Scotia beaches prove a beach needs a balance between opposing forces to thrive.

The mythology of Ixchel, a protective mother figure.

Hawaiian beaches are created and altered by active volcanoes.

Fraser Island is the largest sand island on Earth and a UNESCO World Heritage Site.

Taking a deep dive into the teeming waters of the Hauraki Gulf, near Auckland, New Zealand, and exploring a true paradise for ocean creatures: glimpsing a stealthy manta ray, enjoying dolphin antics and admiring a kaleidoscope of tropical fish.

Soaring above the Iberian Peninsula for a closer look at the griffon vulture: the biggest, most aggressive of the region's carrion raptors; glimpsing nests where baby vultures are nurtured for up to six months.

Ascending to new heights in pursuit of the wily mountain goat; discovering the best-kept secrets of these nimble climbers, whose capable hooves and perfectly adapted anatomy make even the best-equipped mountaineer jealous.

Going undercover to meet the ever-changing chameleon, a master of disguise with amazing physical prowess; a close look at Juan Antonio's sketchbook depicts this lizard's secrets, including enhanced vision, sticky feet, and a prehensile tail.

Pondering the intersection of myth and reality regarding the secretive stork; learning about the surprisingly complex life of this graceful bird of fertility myths; Juan Antonio draws one in all its wild glory.

Milton, Cash and Bentley: Celebrate Cash the house donkey's birthday, then play hide-and-seek with Milton the skunk. Meet Bjornar the beaver, who has an essential job. (S2, ep 4).

Exploring ancient fire traditions and a sugar glider's daring escape from the flames.

The Cederberg Mountains of South Africa are home to myriad plants and animals.

Milton, Cash and Bentley: Celebrate Cash the house donkey's birthday, then play hide-and-seek with Milton the skunk. Meet Bjornar the beaver, who has an essential job. (S2, ep 4).

Exploring ancient fire traditions and a sugar glider's daring escape from the flames.

The Cederberg Mountains of South Africa are home to myriad plants and animals.

Valentino, Yutris and the rest of group two have fun as they visit group three's flooded classroom; three quarantine infants get the results of their TB tests; the residents of Bangamat Island do not welcome newcomers leading to a confrontation.

Milton, Cash and Bentley: Celebrate Cash the house donkey's birthday, then play hide-and-seek with Milton the skunk. Meet Bjornar the beaver, who has an essential job. (S2, ep 4).

Exploring ancient fire traditions and a sugar glider's daring escape from the flames.

The Cederberg Mountains of South Africa are home to myriad plants and animals.

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

The remote Auyuittuq National Park is home to polar bears, glaciers and Mount Thor.

Some of the most lush and remote landscapes on the continent are preserved in the Gwaii Haanas National Park Reserve.

Hope visits two long-term patients; tough choices; a unique creature joins the rehab.

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

The remote Auyuittuq National Park is home to polar bears, glaciers and Mount Thor.

Some of the most lush and remote landscapes on the continent are preserved in the Gwaii Haanas National Park Reserve.

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.

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

The creatures of the wetlands.

The Galápagos, world-famous for inspiring the groundbreaking theories of Charles Darwin, is, like the rest of the world, threatened by climate change.

The story of the passionate researchers who are committed to protect and conserve this special, but fragile, ecosystem.

The islands' natural rhythms and challenges of new life unfold in this wild outpost; turtles return to nesting sites, rival iguanas compete for mates and albatrosses perform courtship dances.

Milton, Cash and Bentley: Celebrate Cash the house donkey's birthday, then play hide-and-seek with Milton the skunk. Meet Bjornar the beaver, who has an essential job. (S2, ep 4).

Exploring ancient fire traditions and a sugar glider's daring escape from the flames.

The Cederberg Mountains of South Africa are home to myriad plants and animals.

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

Tag along with Lizzie on her most dangerous Atlantic adventure yet; free diving with bull sharks; explore otherworldly Gulf Coast swamps filled with hungry alligators, crafty snapping turtles and tiny but mighty beach mice who strengthen sand dunes.

Lizzie heads north to tag sharks and witness first-hand the slow disappearance of sea ice; she does time in bear jail with polar bears who are caught raiding a town for food after their hunting grounds diminish.

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

Tag along with Lizzie on her most dangerous Atlantic adventure yet; free diving with bull sharks; explore otherworldly Gulf Coast swamps filled with hungry alligators, crafty snapping turtles and tiny but mighty beach mice who strengthen sand dunes.

Lizzie heads north to tag sharks and witness first-hand the slow disappearance of sea ice; she does time in bear jail with polar bears who are caught raiding a town for food after their hunting grounds diminish.

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.

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

Tag along with Lizzie on her most dangerous Atlantic adventure yet; free diving with bull sharks; explore otherworldly Gulf Coast swamps filled with hungry alligators, crafty snapping turtles and tiny but mighty beach mice who strengthen sand dunes.

Lizzie heads north to tag sharks and witness first-hand the slow disappearance of sea ice; she does time in bear jail with polar bears who are caught raiding a town for food after their hunting grounds diminish.

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

Waterton National Park's location makes it one of the best spots on earth to spot wildlife.

One of the world's largest polar bear denning sites hosts both tundra and marine environments.

The flood of fawns arrives; a pigeon gets some much-needed relief; an animal is stuck in a car.

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

Waterton National Park's location makes it one of the best spots on earth to spot wildlife.

One of the world's largest polar bear denning sites hosts both tundra and marine environments.

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.

The Bahamas are surrounded by coral reefs and underwater caves with sharks, turtles, and dolphins.

Clear waters, deep reefs, and dangerous caves.

Exploring the wild blue Caribbean waters of Cozumel, from the Paso del Cedral coral reef to the world's longest subterranean underwater cave system.

Home to the world's second-largest barrier reef, Roatan is one of the world's top dive spots - known for its rare black corals, low-lying nurse sharks and fearsome-looking barracuda.

Cabo Pulmo is the site of an extraordinary marine recovery.

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

Tag along with Lizzie on her most dangerous Atlantic adventure yet; free diving with bull sharks; explore otherworldly Gulf Coast swamps filled with hungry alligators, crafty snapping turtles and tiny but mighty beach mice who strengthen sand dunes.

Lizzie heads north to tag sharks and witness first-hand the slow disappearance of sea ice; she does time in bear jail with polar bears who are caught raiding a town for food after their hunting grounds diminish.

Steve Backshall looks at the dance-like moves that animals perform to survive all aspects of life.

Dive to the dark depths of the sea to uncover the ocean's mysterious inhabitants; journey across vast stretches of open water with humpback whales, then wander down to the ocean floor to witness breathtaking bioluminescence.

Chris reveals some of the best animal builders in the world, a group that is incredibly varied; accomplished animal architects include everything from beavers to bees and prairie dogs to bowerbirds.

Steve Backshall looks at the dance-like moves that animals perform to survive all aspects of life.

Dive to the dark depths of the sea to uncover the ocean's mysterious inhabitants; journey across vast stretches of open water with humpback whales, then wander down to the ocean floor to witness breathtaking bioluminescence.

Chris reveals some of the best animal builders in the world, a group that is incredibly varied; accomplished animal architects include everything from beavers to bees and prairie dogs to bowerbirds.

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.

Steve Backshall looks at the dance-like moves that animals perform to survive all aspects of life.

Dive to the dark depths of the sea to uncover the ocean's mysterious inhabitants; journey across vast stretches of open water with humpback whales, then wander down to the ocean floor to witness breathtaking bioluminescence.

Chris reveals some of the best animal builders in the world, a group that is incredibly varied; accomplished animal architects include everything from beavers to bees and prairie dogs to bowerbirds.

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

Visitors to Nahanni National Park can see striking waterfalls, mountain peaks and canyons.

The scattered terrain of St. Lawrence Islands.

Recently released ravens are attacked; tiny orphans struggle; six stinky skunks.

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

Visitors to Nahanni National Park can see striking waterfalls, mountain peaks and canyons.

The scattered terrain of St. Lawrence Islands.

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.

Along the bank of the Luangwa River is a troop of eighty or so baboons. This is the story of a family, and a young male baboon who faces difficult choices as he comes of age.

A pride of lions roams the Luangwa Valley and encounters honey badgers, warthogs, hyenas and other fascinating animals.

Zambia's Luangwa Valley possesses a remarkable ecosystem; home to some of the most iconic African species, it is also teeming with a host of smaller animals.

Wake up with a new generation of lion cubs, zebra calves, and hyena pups on the African savannah, where every sunrise brings hope and new challenges. Celebrate their first strides toward independence in a land where every step is a test of survival.

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.

Steve Backshall looks at the dance-like moves that animals perform to survive all aspects of life.

Dive to the dark depths of the sea to uncover the ocean's mysterious inhabitants; journey across vast stretches of open water with humpback whales, then wander down to the ocean floor to witness breathtaking bioluminescence.

Chris reveals some of the best animal builders in the world, a group that is incredibly varied; accomplished animal architects include everything from beavers to bees and prairie dogs to bowerbirds.

Einstein fails to make new connections and weigh the pros and cons when Keeza and her cub are kidnapped by rival male Mad-Eye Moody.

The Onçafari team gets to know Aroeira, their newly collared female and takes a peek at Aurora's cub, Apolo; Badalo moves deeper into the flooded forest, where he puts Lizzie's game-changing research in jeopardy.

Join anthropologist Jill Pruetz and guide Dondo "Johnny" Kanté and watch evolution happen in real time; meet the elusive chimps of Fongoli, Senegal, who use tools, interact with fire, and adapt to the human world as it collides with their own.

Einstein fails to make new connections and weigh the pros and cons when Keeza and her cub are kidnapped by rival male Mad-Eye Moody.

The Onçafari team gets to know Aroeira, their newly collared female and takes a peek at Aurora's cub, Apolo; Badalo moves deeper into the flooded forest, where he puts Lizzie's game-changing research in jeopardy.

Join anthropologist Jill Pruetz and guide Dondo "Johnny" Kanté and watch evolution happen in real time; meet the elusive chimps of Fongoli, Senegal, who use tools, interact with fire, and adapt to the human world as it collides with their own.

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.

Einstein fails to make new connections and weigh the pros and cons when Keeza and her cub are kidnapped by rival male Mad-Eye Moody.

The Onçafari team gets to know Aroeira, their newly collared female and takes a peek at Aurora's cub, Apolo; Badalo moves deeper into the flooded forest, where he puts Lizzie's game-changing research in jeopardy.

Join anthropologist Jill Pruetz and guide Dondo "Johnny" Kanté and watch evolution happen in real time; meet the elusive chimps of Fongoli, Senegal, who use tools, interact with fire, and adapt to the human world as it collides with their own.

Fascinating creatures thrive in the muck.

Yoho National Park, on the western slopes of the Rocky Mountains, has more than 250 miles of hiking trails.

This arctic land offers caribou, bears and wolves roaming among canyon vistas.

An eagle falls out of its nest; Hope's fawns are in trouble; an attic full of songbirds.

Fascinating creatures thrive in the muck.

Yoho National Park, on the western slopes of the Rocky Mountains, has more than 250 miles of hiking trails.

This arctic land offers caribou, bears and wolves roaming among canyon vistas.

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.

From the icy peaks of age-old mountain glaciers to the fog-shrouded canopies of Canada's only rainforest, it's the wettest place in North America.

The jungle, underwater caves and lush everglades of the Yucatán shelter Mexico's largest predator, Morelet's crocodile.

In the heart of central Mexico, lies Sierra Gorda, a region that is home to bobcats, pumas and flying squirrels.

Costa Rica is a world of its own; a tropical corridor squeezed between two great oceans, powered by rivers and volcanoes; its volcanoes erupt and deposit minerals into the soil, making the land fertile and creating the country's rich bio-diversity.

Enduring winter and early spring on the West Coast, where animals eke out a chilly existence; watching red deer battle on windswept Inishvickillane, welcome seal pups amid howling storms on the Inishkea Islands.

Einstein fails to make new connections and weigh the pros and cons when Keeza and her cub are kidnapped by rival male Mad-Eye Moody.

The Onçafari team gets to know Aroeira, their newly collared female and takes a peek at Aurora's cub, Apolo; Badalo moves deeper into the flooded forest, where he puts Lizzie's game-changing research in jeopardy.

Join anthropologist Jill Pruetz and guide Dondo "Johnny" Kanté and watch evolution happen in real time; meet the elusive chimps of Fongoli, Senegal, who use tools, interact with fire, and adapt to the human world as it collides with their own.