Live through a sunny tropical September day with creatures from Polynesia.

The ruthless realm of some of the stealthiest and cleverest insects in the animal kingdom - from praying mantises and aquatic insects to dragonflies.

The crucial ecological roles that beetles play in nearly every environment, and why they are often regarded "the most important species on the planet.".

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.

Live through a sunny tropical September day with creatures from Polynesia.

The ruthless realm of some of the stealthiest and cleverest insects in the animal kingdom - from praying mantises and aquatic insects to dragonflies.

The crucial ecological roles that beetles play in nearly every environment, and why they are often regarded "the most important species on the planet.".

Spy on the summer cubs as they learn to climb trees and forage for food in preparation for their release into the wild; get surprised by a set of new arrivals, observe the annual pre-hibernation eating binge and enjoy a bear-friendly Thanksgiving.

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.

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

Spy on the summer cubs as they learn to climb trees and forage for food in preparation for their release into the wild; get surprised by a set of new arrivals, observe the annual pre-hibernation eating binge and enjoy a bear-friendly Thanksgiving.

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.

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

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

A trek across Africa to peek at the colorful, quirky survival strategies of its animals; from flamboyant flamingos to vanishing lizards, these furry, feathered, and scaled magicians find food, elude predators, and find mates against all odds.

In central Australia, Brolga, the world's most famous kangaroo mum, learns what it takes to look after his extended animal family; the three emu chicks begin to wreak havoc and the camels are rapidly outgrowing their backyard enclosure.

A professor develops a relationship with an octopus when he invites it to live in his home; the octopus, called Heidi, unravels puzzles, recognises individual humans and even watches TV with the family.

A veteran pair of ospreys return home to a Connecticut salt marsh; over one summer they must battle their enemies, withstand the elements and hunt hundreds of fish, all to raise the next generation of sea raptors.

Live through a sunny tropical September day with creatures from Polynesia.

The ruthless realm of some of the stealthiest and cleverest insects in the animal kingdom - from praying mantises and aquatic insects to dragonflies.

The crucial ecological roles that beetles play in nearly every environment, and why they are often regarded "the most important species on the planet.".

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.

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

Learning to fight dirty with a guanaco, head-butting a fellow iguana to claim a piece of prime territory, and meeting a hermit crab who forcibly evicts a tenant from its shell.

With real-life dueling dragons, giant sumo-wrestling beetles, street-fighting monkeys, and sea turtles that play king of the hill - on top of another sea turtle, Southeast Asia boasts a wide range of wildlife warriors.

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.

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

Learning to fight dirty with a guanaco, head-butting a fellow iguana to claim a piece of prime territory, and meeting a hermit crab who forcibly evicts a tenant from its shell.

With real-life dueling dragons, giant sumo-wrestling beetles, street-fighting monkeys, and sea turtles that play king of the hill - on top of another sea turtle, Southeast Asia boasts a wide range of wildlife warriors.

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.

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.

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

Learning to fight dirty with a guanaco, head-butting a fellow iguana to claim a piece of prime territory, and meeting a hermit crab who forcibly evicts a tenant from its shell.

With real-life dueling dragons, giant sumo-wrestling beetles, street-fighting monkeys, and sea turtles that play king of the hill - on top of another sea turtle, Southeast Asia boasts a wide range of wildlife warriors.

Prepare for the summer cubs' release with Roger; meet Ace and Little Blueberry, two newbies with serious health issues who will have to stay over the winter with the Z cubs; six happy, healthy bears embark on their new lives in the wild.

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.

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

Prepare for the summer cubs' release with Roger; meet Ace and Little Blueberry, two newbies with serious health issues who will have to stay over the winter with the Z cubs; six happy, healthy bears embark on their new lives in the wild.

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.

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

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

The story of Galapagos and the many challenges of continuing the circle of life in this wild and rugged outpost.

The story of the Marsh pride of lions as it battles for survival in Kenya's Massai Mara Reserve.

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.

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

Learning to fight dirty with a guanaco, head-butting a fellow iguana to claim a piece of prime territory, and meeting a hermit crab who forcibly evicts a tenant from its shell.

With real-life dueling dragons, giant sumo-wrestling beetles, street-fighting monkeys, and sea turtles that play king of the hill - on top of another sea turtle, Southeast Asia boasts a wide range of wildlife warriors.

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.

Young gladiators earn their stripes in the dense tropical forests of the Americas; a poison dart frog launches a toxic barrage, observe a jaguar-caiman turf war, and see a hungry coati cross paths with a defensive tarantula.

Heading to America's far north for a peek at the ultimate fighters that live along its waterways; a spring thaw kicks off the competition, pitting eagles against herons, bears against bears, and dragonfly nymphs against venomous giant water bugs.

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.

Young gladiators earn their stripes in the dense tropical forests of the Americas; a poison dart frog launches a toxic barrage, observe a jaguar-caiman turf war, and see a hungry coati cross paths with a defensive tarantula.

Heading to America's far north for a peek at the ultimate fighters that live along its waterways; a spring thaw kicks off the competition, pitting eagles against herons, bears against bears, and dragonfly nymphs against venomous giant water bugs.

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.

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.

Young gladiators earn their stripes in the dense tropical forests of the Americas; a poison dart frog launches a toxic barrage, observe a jaguar-caiman turf war, and see a hungry coati cross paths with a defensive tarantula.

Heading to America's far north for a peek at the ultimate fighters that live along its waterways; a spring thaw kicks off the competition, pitting eagles against herons, bears against bears, and dragonfly nymphs against venomous giant water bugs.

Exploring marine life off the island of Bonaire; heavy tourism spurs a conservation effort.

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

The scattered terrain of St. Lawrence Islands.

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

Exploring marine life off the island of Bonaire; heavy tourism spurs a conservation effort.

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

The scattered terrain of St. Lawrence Islands.

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.

Exploring marine life off the island of Bonaire; heavy tourism spurs a conservation effort.

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

The creatures of the wetlands.

Descend into the tide pool, where a hermit crab house hunts; a baby catshark runs into strange neighbors; an octopus terrorizes prey; watch seagulls and other creatures hunt on the surface as the heat rises and oxygen depletes in the pool.

The sun sets and predators prowl around the pool before the tide finally rolls in; persevere as night falls with a kleptomaniacal slug and an acrobatic scallop; a pair of sneaky crabs take a dangerous shot at romance.

Diving into a busy summer at the RSPCA Wildlife Hospital, where vet Emily takes the pressure off a gassy koala mum; the team fight a wave of lorikeet paralysis syndrome and vet Karina uses a teddy bear to rescue a flying fox pup.

Young gladiators earn their stripes in the dense tropical forests of the Americas; a poison dart frog launches a toxic barrage, observe a jaguar-caiman turf war, and see a hungry coati cross paths with a defensive tarantula.

Heading to America's far north for a peek at the ultimate fighters that live along its waterways; a spring thaw kicks off the competition, pitting eagles against herons, bears against bears, and dragonfly nymphs against venomous giant water bugs.

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

Arctic winds plunge the polar bear into a deep freeze, while in Australia, the heat means a feast for one bird prey.

Heading out with Lizzie and the Oncafari team as they set out on the hunt for a missing, dominant jaguar; monitoring the battle between young individuals who are all coveting power.

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

Arctic winds plunge the polar bear into a deep freeze, while in Australia, the heat means a feast for one bird prey.

Heading out with Lizzie and the Oncafari team as they set out on the hunt for a missing, dominant jaguar; monitoring the battle between young individuals who are all coveting power.

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.

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

Arctic winds plunge the polar bear into a deep freeze, while in Australia, the heat means a feast for one bird prey.

Heading out with Lizzie and the Oncafari team as they set out on the hunt for a missing, dominant jaguar; monitoring the battle between young individuals who are all coveting power.

Marine protected areas in Florida.

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.

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

Marine protected areas in Florida.

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.

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.

Marine protected areas in Florida.

Adolescent lions face many challenges.

Spotted Hyenas on the Liuwa Plains in western Zambia.

Chilema, a young elephant, must learn how to navigate the world without her trunk.

Africa's trees provide food, shelter, and opportunities for its creatures.

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

Arctic winds plunge the polar bear into a deep freeze, while in Australia, the heat means a feast for one bird prey.

Heading out with Lizzie and the Oncafari team as they set out on the hunt for a missing, dominant jaguar; monitoring the battle between young individuals who are all coveting power.

Anna, the Bay family matriarch, helps raise the newest members of the community. Elsewhere, a flood in the mangroves nearly sweeps away a baby, and the Townies eat through their resources.

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.

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.

Anna, the Bay family matriarch, helps raise the newest members of the community. Elsewhere, a flood in the mangroves nearly sweeps away a baby, and the Townies eat through their resources.

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.

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.

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.

Anna, the Bay family matriarch, helps raise the newest members of the community. Elsewhere, a flood in the mangroves nearly sweeps away a baby, and the Townies eat through their resources.

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.

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.

The Monterey Bay National Marine Sanctuary is the largest marine sanctuary in the United States.

Exploring the only island park in the Canadian Maritimes.

Canada's largest national park.

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

The Monterey Bay National Marine Sanctuary is the largest marine sanctuary in the United States.

Exploring the only island park in the Canadian Maritimes.

Canada's largest national park.

After weeks of battling a mysterious head infection, Erik joins the group two students; at forest school, the group three students enjoy a poolside classroom where Valentino proves he's more than just a class clown.

The Monterey Bay National Marine Sanctuary is the largest marine sanctuary in the United States.

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

Animals living in the harsh conditions of the mountain peaks.

The waterways of the Rocky Mountains are home to many creatures.

When rocks engulfed by flames emerge from the middle of the ocean, new opportunities arise for the species that manage to reach them; this is the case of the Canary Islands, eight islands born from fire, that form an archipelago full of life.

Anna, the Bay family matriarch, helps raise the newest members of the community. Elsewhere, a flood in the mangroves nearly sweeps away a baby, and the Townies eat through their resources.

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.

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.

Whale researcher, Nan Hauserat, is in the Cook Islands to research humpback whales.

South Cuba's remarkable coral reefs have been unexplored for over 50 years.

Winter slowly releases its iron grip on the North Atlantic; meet a family of playful otters, a lovelorn Arctic fox, and a reindeer herd determined to reach their calving grounds despite the fearsome weather.

Whale researcher, Nan Hauserat, is in the Cook Islands to research humpback whales.

South Cuba's remarkable coral reefs have been unexplored for over 50 years.

Winter slowly releases its iron grip on the North Atlantic; meet a family of playful otters, a lovelorn Arctic fox, and a reindeer herd determined to reach their calving grounds despite the fearsome weather.

After weeks of battling a mysterious head infection, Erik joins the group two students; at forest school, the group three students enjoy a poolside classroom where Valentino proves he's more than just a class clown.

Whale researcher, Nan Hauserat, is in the Cook Islands to research humpback whales.

South Cuba's remarkable coral reefs have been unexplored for over 50 years.

Winter slowly releases its iron grip on the North Atlantic; meet a family of playful otters, a lovelorn Arctic fox, and a reindeer herd determined to reach their calving grounds despite the fearsome weather.

These Parks are monitored by Ocean advocates dedicated to maintaining the shark feeding grounds, turtle populations, and marine spawning grounds that line this incredible reef system.

Pukaskwa's unpredictable landscape features boreal forests and iron-rich plutonic rocks.

Mingan Archipelago, along the St. Lawrence River, is composed of 30 limestone islands and more than 1,0000 islets.

A baby owl needs to be reunited with its parents; a volunteer returns to the rehab in a new role; a duck rescue goes wet and wild.

These Parks are monitored by Ocean advocates dedicated to maintaining the shark feeding grounds, turtle populations, and marine spawning grounds that line this incredible reef system.

Pukaskwa's unpredictable landscape features boreal forests and iron-rich plutonic rocks.

Mingan Archipelago, along the St. Lawrence River, is composed of 30 limestone islands and more than 1,0000 islets.

Young orangutans who have lost their mothers to poaching and deforestation learn the skills they'll need to survive in the wild at a unique forest school.

These Parks are monitored by Ocean advocates dedicated to maintaining the shark feeding grounds, turtle populations, and marine spawning grounds that line this incredible reef system.

Shipwrecks in the Caribbean become artificial reefs that support marine life.

The waters near the Florida Keys are home to as many as 1,000 shipwrecks.

Cinematic shipwrecks of the Bahamas.

The Savanna's woodland of southern Africa is a unique ecosystem in the world. A great amount of branches and bushes have created a dark maze, where predators and preys are in a continuous state of tension. Visibility is little.

Whale researcher, Nan Hauserat, is in the Cook Islands to research humpback whales.

South Cuba's remarkable coral reefs have been unexplored for over 50 years.

Winter slowly releases its iron grip on the North Atlantic; meet a family of playful otters, a lovelorn Arctic fox, and a reindeer herd determined to reach their calving grounds despite the fearsome weather.

Twin fawns arrive at the centre; a volunteer searches for orphans in the woods; Hope tends to a tiny owl.

Amanda goes on an adventure to rescue a waterbuck caught by a poacher's snare; the center's resident hyena is treated for fly-bitten ears; Alma gets a mysterious late night monkey delivery.

Follow the team in healing and releasing a grumpy sea turtle, and then meet a sea lion with an unusual injury that must be taken by crane to the rescue centre. Find out how the vet aids an aging fruit bat and a community rescues a one-eyed seal pup.

Twin fawns arrive at the centre; a volunteer searches for orphans in the woods; Hope tends to a tiny owl.

Amanda goes on an adventure to rescue a waterbuck caught by a poacher's snare; the center's resident hyena is treated for fly-bitten ears; Alma gets a mysterious late night monkey delivery.

Follow the team in healing and releasing a grumpy sea turtle, and then meet a sea lion with an unusual injury that must be taken by crane to the rescue centre. Find out how the vet aids an aging fruit bat and a community rescues a one-eyed seal pup.

Young orangutans who have lost their mothers to poaching and deforestation learn the skills they'll need to survive in the wild at a unique forest school.

Twin fawns arrive at the centre; a volunteer searches for orphans in the woods; Hope tends to a tiny owl.

Amanda goes on an adventure to rescue a waterbuck caught by a poacher's snare; the center's resident hyena is treated for fly-bitten ears; Alma gets a mysterious late night monkey delivery.

Follow the team in healing and releasing a grumpy sea turtle, and then meet a sea lion with an unusual injury that must be taken by crane to the rescue centre. Find out how the vet aids an aging fruit bat and a community rescues a one-eyed seal pup.

The Exuma Cays are tiny islands near the Bahamian Capital of Nassau.

Killarney Provincial Park acted as a battleground early in the environmental movement.

Nanabijou's trails may affect dear, wolf, and moose populations.

Busier than ever, Hope and the team struggle to handle the huge caseload; a volunteer helps an injured bird.

The Exuma Cays are tiny islands near the Bahamian Capital of Nassau.

Killarney Provincial Park acted as a battleground early in the environmental movement.

Nanabijou's trails may affect dear, wolf, and moose populations.

Young orangutans who have lost their mothers to poaching and deforestation learn the skills they'll need to survive in the wild at a unique forest school.

The Exuma Cays are tiny islands near the Bahamian Capital of Nassau.

Roaming across America with a road-tripping chicken and meeting a mouse family living in an English garden; beating arachnophobia with a spider's help; trekking with the guardian of Earth's last two northern white rhinos.

Cockatoos and platypuses inspire new careers; a shared trauma bonds a human and an elephant for life; George the turkey vulture gets playful; a farewell to human-raised kangaroos.

As the leaves change, wild urges grip the animals; Rams Roger and Hamish battle for dominance, while Sally the hen flies the coop for a tour of the farm.

Sharks are at risk in Costa Rica.

Twin fawns arrive at the centre; a volunteer searches for orphans in the woods; Hope tends to a tiny owl.

Amanda goes on an adventure to rescue a waterbuck caught by a poacher's snare; the center's resident hyena is treated for fly-bitten ears; Alma gets a mysterious late night monkey delivery.

Follow the team in healing and releasing a grumpy sea turtle, and then meet a sea lion with an unusual injury that must be taken by crane to the rescue centre. Find out how the vet aids an aging fruit bat and a community rescues a one-eyed seal pup.

On the first day of spring in Australia, creatures look for either dinner or a date, ranging from kangaroos in the grasslands to koalas in the trees and freshwater crocodiles.

Tending to a spring rush and a rude roo.

Aiding a pelican in peril and a mad koala.

On the first day of spring in Australia, creatures look for either dinner or a date, ranging from kangaroos in the grasslands to koalas in the trees and freshwater crocodiles.

Tending to a spring rush and a rude roo.

Aiding a pelican in peril and a mad koala.

Young orangutans who have lost their mothers to poaching and deforestation learn the skills they'll need to survive in the wild at a unique forest school.

On the first day of spring in Australia, creatures look for either dinner or a date, ranging from kangaroos in the grasslands to koalas in the trees and freshwater crocodiles.

Tending to a spring rush and a rude roo.

Aiding a pelican in peril and a mad koala.

Across the continent, the land and its wildlife breathe in warmth and renewal; for some animals, courtship rituals begin to heat up as battles for dominance break out; for others, it's the time to tend to brand new life.

Quetico Provincial Park pioneers forest fire strategies and faces a declining moose population.

The jewel of the Ontario parks system gives a muse to Tom Thompson and draws many researchers.

Starting up a raccoon adoption agency; Hope tries to make peace between wild enemies; a kidnapped fawn needs to be reunited with its mother.

Across the continent, the land and its wildlife breathe in warmth and renewal; for some animals, courtship rituals begin to heat up as battles for dominance break out; for others, it's the time to tend to brand new life.

Quetico Provincial Park pioneers forest fire strategies and faces a declining moose population.

The jewel of the Ontario parks system gives a muse to Tom Thompson and draws many researchers.

The fate of several graduates awaits the next round of wild releases; runaway Zalipa is found, but her partner in crime, Tulia, is still missing; baby Clarita has a complete meltdown as the vets perform surgery on her mother.

Across the continent, the land and its wildlife breathe in warmth and renewal; for some animals, courtship rituals begin to heat up as battles for dominance break out; for others, it's the time to tend to brand new life.

Adventure seekers cross Ethiopia's Danakil Depression to view the Erte Ale volcano.

Tom Pfeiffer hears Anak is going into a violent phase and flies to Indonesia to see if the Child of Fire is ready to repeat the pattern of its ancestor.

The volcano's destructive power is a reminder of nature's dominance.

A sudden collapse of the crater floor and a massive eruption drains Hawaii's Kilauea volcano of lava, making it possible to explore.

Volcanologist Tom Pfeiffer explores some of Indonesia's most remote volcanoes.

The ancient Aztec legend of Popocatépetl.

On the first day of spring in Australia, creatures look for either dinner or a date, ranging from kangaroos in the grasslands to koalas in the trees and freshwater crocodiles.

Tending to a spring rush and a rude roo.

Aiding a pelican in peril and a mad koala.

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.

Spinner dolphins hunt shoals of lanternfish while dodging giant rays.

Bighorn rams rattle the mountaintops; Brown bears battle, desperate to fatten up for winter; Sharp-tailed grouse shake their tail-feathers; Wild stallions rumble with beauty and grace.

From the Highlands to the Alps, Europe's evocative landscapes are the backdrop for epic wildlife drama; normally stoic red deer go wild during the rut; wolf packs clash over territory, and foxes do the foxtrot but it's not as nice as it sounds.

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.

Spinner dolphins hunt shoals of lanternfish while dodging giant rays.

Bighorn rams rattle the mountaintops; Brown bears battle, desperate to fatten up for winter; Sharp-tailed grouse shake their tail-feathers; Wild stallions rumble with beauty and grace.

From the Highlands to the Alps, Europe's evocative landscapes are the backdrop for epic wildlife drama; normally stoic red deer go wild during the rut; wolf packs clash over territory, and foxes do the foxtrot but it's not as nice as it sounds.

The fate of several graduates awaits the next round of wild releases; runaway Zalipa is found, but her partner in crime, Tulia, is still missing; baby Clarita has a complete meltdown as the vets perform surgery on her mother.

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.

Spinner dolphins hunt shoals of lanternfish while dodging giant rays.

Bighorn rams rattle the mountaintops; Brown bears battle, desperate to fatten up for winter; Sharp-tailed grouse shake their tail-feathers; Wild stallions rumble with beauty and grace.

From the Highlands to the Alps, Europe's evocative landscapes are the backdrop for epic wildlife drama; normally stoic red deer go wild during the rut; wolf packs clash over territory, and foxes do the foxtrot but it's not as nice as it sounds.

Summer is the time of plenty across America; it's a chance for animals to reap nature's bounty while they can; the year's young begin to explore their world, while new parents make use of the long days to make sure they grow up strong.

Determining the effect of global warming on the park's glaciers and wolverine population.

A healthy bison population is threatened by where they eat.

A new volunteer steps up to the challenge; Hope's first fawn of the year interrupts delicate surgery on an injured owl.

Summer is the time of plenty across America; it's a chance for animals to reap nature's bounty while they can; the year's young begin to explore their world, while new parents make use of the long days to make sure they grow up strong.

Determining the effect of global warming on the park's glaciers and wolverine population.

A healthy bison population is threatened by where they eat.

The team makes the final attempt to reunite reluctant mother Dilla with her new baby Delilah; Clara and Clarita are on their final journey to freedom when a dangerous flood stops them in their tracks and threatens everyone.

Summer is the time of plenty across America; it's a chance for animals to reap nature's bounty while they can; the year's young begin to explore their world, while new parents make use of the long days to make sure they grow up strong.

Trekking through the Canadian rainforest, looking up at dizzying redwood trees and exploring giant kelp forests with Lizzie as she experiences the wild West Coast of North America; crossing paths with wolves and bears while salmon travel upstream.

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.

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.

Spinner dolphins hunt shoals of lanternfish while dodging giant rays.

Bighorn rams rattle the mountaintops; Brown bears battle, desperate to fatten up for winter; Sharp-tailed grouse shake their tail-feathers; Wild stallions rumble with beauty and grace.

From the Highlands to the Alps, Europe's evocative landscapes are the backdrop for epic wildlife drama; normally stoic red deer go wild during the rut; wolf packs clash over territory, and foxes do the foxtrot but it's not as nice as it sounds.

Only seven percent of the Great Barrier Reef is coral and the remainder is a variety of interconnected habitats including the world's oldest jungle, hundreds of islands, mangrove swamps, deep water gardens, sand flats and sea grass.

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.

Exploring a 1,500-year-old monastery among the dizzying crags of the world-famous Skellig Islands; Spy Manx shearwaters and humpback whales, pygmy shrews on Clare, and the Aran Islands at an autumn spectacle.

Only seven percent of the Great Barrier Reef is coral and the remainder is a variety of interconnected habitats including the world's oldest jungle, hundreds of islands, mangrove swamps, deep water gardens, sand flats and sea grass.

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.

Exploring a 1,500-year-old monastery among the dizzying crags of the world-famous Skellig Islands; Spy Manx shearwaters and humpback whales, pygmy shrews on Clare, and the Aran Islands at an autumn spectacle.

The team makes the final attempt to reunite reluctant mother Dilla with her new baby Delilah; Clara and Clarita are on their final journey to freedom when a dangerous flood stops them in their tracks and threatens everyone.

Only seven percent of the Great Barrier Reef is coral and the remainder is a variety of interconnected habitats including the world's oldest jungle, hundreds of islands, mangrove swamps, deep water gardens, sand flats and sea grass.

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.

Exploring a 1,500-year-old monastery among the dizzying crags of the world-famous Skellig Islands; Spy Manx shearwaters and humpback whales, pygmy shrews on Clare, and the Aran Islands at an autumn spectacle.

In Autumn, change sweeps across America; as the trees greet the chill with a blaze of color, it's make or break time for animals; time to pull up stakes, make last minute preparations, and often find a mate before the cold sets in.

Feeding a Giant Panda cub named Bao Bao.

Feeding a pride of adolescent lions.

A hurricane slams the rehab, knocking an osprey nest out of its tree; Hope scrambles to save the babies in the middle of the storm.

In Autumn, change sweeps across America; as the trees greet the chill with a blaze of color, it's make or break time for animals; time to pull up stakes, make last minute preparations, and often find a mate before the cold sets in.

Feeding a Giant Panda cub named Bao Bao.

Feeding a pride of adolescent lions.

Two wild black rhinos fight to the death; a new ambassador for the black rhinos.

Ol Pejeta is in the shadow of Mount Kenya, but it has one of the most stunning sunrises in all of Africa.

The staff attempts to put radio transmitting collars on the lions to keep track of the population.

The park's hyena population grows.

Triggering the natural instincts of North African white rhinos prompts their return to the wild.

An attempt to discover what is killing off the black rhino, before it's too late.

Eight giraffes are moved to a newly opened wildlife area on an island.

An agitated elephant ends up in a local village and the vets need to find a helicopter immediately.

The vets attempt to breed the rare Grevy's zebras while the more common zebras have to be moved.

Batian organizes a massive translocation of three species, but things don't go according to plan.

The wild grasslands are a dangerous place for Africa's smallest monkey.

Lions, hyenas and buffalo work together to survive in the Zambian wilderness.

A bull hippo, a young lion and a massive buffalo meet their fates in the Zambian wilderness.

Zambia's wildest places are a paradise for the animals that call them home, including the Luangwa River Valley, the Liuwa Plain and the Kasanka National Park.