The filmmakers explore the uncommon friendships between people and their unusual wild pets and their fascinating backstories.

Bask in the interconnected lives of wildlife shaped by volcanoes, forests and seas; take flight with rare Philippine eagles as they raise their young in an ancient tree, then dive into a river to catch a glimpse of the world's rarest crocodile.

Few creatures can survive in the extremes of the Namib Desert.

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.

The filmmakers explore the uncommon friendships between people and their unusual wild pets and their fascinating backstories.

Bask in the interconnected lives of wildlife shaped by volcanoes, forests and seas; take flight with rare Philippine eagles as they raise their young in an ancient tree, then dive into a river to catch a glimpse of the world's rarest crocodile.

Few creatures can survive in the extremes of the Namib Desert.

The Stage 1 winners and some tough new recruits dash to cash on July's salmon feast; BigBoi embarks on a food-finding road trip, QuadMom and RedBack are welcomed to the feast and BoldFace keeps her surviving cub safe.

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.

Allison brings her work home; some orphans try to make a break for it while Allison and Hope are away.

The Stage 1 winners and some tough new recruits dash to cash on July's salmon feast; BigBoi embarks on a food-finding road trip, QuadMom and RedBack are welcomed to the feast and BoldFace keeps her surviving cub safe.

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.

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.

Researchers study shark behavior and fight for the protection of these predators.

Researchers risk everything to unlock secret shark behaviors, challenge myths about sharks, and fight for the protection of these predators.

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.

Sharks often get portrayed as mindless predators prone to attacking humans, but there is more to these graceful apex predators than meets the eye; the Bimini Sharklab undertakes novel research into shark intelligence.

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

The filmmakers explore the uncommon friendships between people and their unusual wild pets and their fascinating backstories.

Bask in the interconnected lives of wildlife shaped by volcanoes, forests and seas; take flight with rare Philippine eagles as they raise their young in an ancient tree, then dive into a river to catch a glimpse of the world's rarest crocodile.

Few creatures can survive in the extremes of the Namib Desert.

Watch the cannibalistic Portia spider devour the competition; uncover the bloodthirsty side of cuddly koalas; catch an epic giraffe battle.

Scientists and enthusiasts reveal the crucial roles bugs play on the planet and what the future would be without them.

The colorful world of Earth's essential pollinators - bees, moths and butterflies.

Watch the cannibalistic Portia spider devour the competition; uncover the bloodthirsty side of cuddly koalas; catch an epic giraffe battle.

Scientists and enthusiasts reveal the crucial roles bugs play on the planet and what the future would be without them.

The colorful world of Earth's essential pollinators - bees, moths and butterflies.

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.

Watch the cannibalistic Portia spider devour the competition; uncover the bloodthirsty side of cuddly koalas; catch an epic giraffe battle.

Scientists and enthusiasts reveal the crucial roles bugs play on the planet and what the future would be without them.

The colorful world of Earth's essential pollinators - bees, moths and butterflies.

An icy October storm complicates the race to the finish line; Big Boi bounces after a stumble before tragedy hits QuadMom; fan fave BoldFace hits her stride despite her clingy kid, Raccoon.

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 open house is bigger than ever, which brings about more challenges.

An icy October storm complicates the race to the finish line; Big Boi bounces after a stumble before tragedy hits QuadMom; fan fave BoldFace hits her stride despite her clingy kid, Raccoon.

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

A healthy bison population is threatened by where they eat.

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.

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.

Watch the cannibalistic Portia spider devour the competition; uncover the bloodthirsty side of cuddly koalas; catch an epic giraffe battle.

Scientists and enthusiasts reveal the crucial roles bugs play on the planet and what the future would be without them.

The colorful world of Earth's essential pollinators - bees, moths and butterflies.

Spinner dolphins hunt shoals of lanternfish while dodging giant rays.

Coasts are gateways from land to sea, offering opportunities to many creatures.

Chris Packham looks at social intelligence in the animal kingdom, and finds out why it is that, for animals, being together means being clever; he looks at how lions hunt in teams, in which each holds a very specific position.

Spinner dolphins hunt shoals of lanternfish while dodging giant rays.

Coasts are gateways from land to sea, offering opportunities to many creatures.

Chris Packham looks at social intelligence in the animal kingdom, and finds out why it is that, for animals, being together means being clever; he looks at how lions hunt in teams, in which each holds a very specific position.

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.

Spinner dolphins hunt shoals of lanternfish while dodging giant rays.

Coasts are gateways from land to sea, offering opportunities to many creatures.

Chris Packham looks at social intelligence in the animal kingdom, and finds out why it is that, for animals, being together means being clever; he looks at how lions hunt in teams, in which each holds a very specific position.

The team saves a massive sea lion caught in a plastic noose; a visit to the Rescue Centre where a harbor seal pup may lose its eyesight; a baby sea otter needs a risky but life-saving surgery.

Madagascar is home to strange animals not found anywhere else on Earth; when these animals fight for supremacy, their battles are just as strange, from weird neck-wrestling weevils to ring-tailed lemur moms that go into battle with baby on board.

Australia is home to an eclectic array of creatures, and the ways to succeed as an alpha are just as diverse; the beach turns into a dueling ground and the outback becomes a boxing ring, as animals face off with their own kind.

Never seen before footage of Hope's greatest stories.

The team saves a massive sea lion caught in a plastic noose; a visit to the Rescue Centre where a harbor seal pup may lose its eyesight; a baby sea otter needs a risky but life-saving surgery.

Madagascar is home to strange animals not found anywhere else on Earth; when these animals fight for supremacy, their battles are just as strange, from weird neck-wrestling weevils to ring-tailed lemur moms that go into battle with baby on board.

Australia is home to an eclectic array of creatures, and the ways to succeed as an alpha are just as diverse; the beach turns into a dueling ground and the outback becomes a boxing ring, as animals face off with their own kind.

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.

Balance the pain of goodbyes with hope for the future as a generation of rescued elephants is finally released.

The hippopotamus and the Nile crocodile coexist in the Tanzanian waterway of East Africa.

A newborn wildebeest faces a terrifying ordeal when it's taken by a lioness. The predator doesn't kill the calf and, instead, takes care of the newborn for an entire day.

A look at the lives of elephant bulls in Mount Kilimanjaro and Amboseli, including their drive for dominance and the social bonds that form between males.

The story of two mothers, a crocodile and a hippopotamus, as they face the perils of raising a family in this beautiful, remote location of Katuma.

Spinner dolphins hunt shoals of lanternfish while dodging giant rays.

Coasts are gateways from land to sea, offering opportunities to many creatures.

Chris Packham looks at social intelligence in the animal kingdom, and finds out why it is that, for animals, being together means being clever; he looks at how lions hunt in teams, in which each holds a very specific position.

Begroet een rijk seizoen als het water zich terugtrekt en kuddes terugkeren naar de oevers van de Chobe. Zie Keeza en haar welp er vandoor gaan terwijl Caller en Tom Tom vechten met hun vijanden, juich als Einstein eindelijk een partner vindt.

Wallabies, koolamana lizards and crocodile hatchlings face the wild river's dangers.

Battling for dominion over the river with crocs; catching glimpses of an ultra-rare mangrove snake and an endangered nabarlek wallaby; humpback whale mothers raise their calves in the ocean; false killer whales.

Begroet een rijk seizoen als het water zich terugtrekt en kuddes terugkeren naar de oevers van de Chobe. Zie Keeza en haar welp er vandoor gaan terwijl Caller en Tom Tom vechten met hun vijanden, juich als Einstein eindelijk een partner vindt.

Wallabies, koolamana lizards and crocodile hatchlings face the wild river's dangers.

Battling for dominion over the river with crocs; catching glimpses of an ultra-rare mangrove snake and an endangered nabarlek wallaby; humpback whale mothers raise their calves in the ocean; false killer whales.

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.

Begroet een rijk seizoen als het water zich terugtrekt en kuddes terugkeren naar de oevers van de Chobe. Zie Keeza en haar welp er vandoor gaan terwijl Caller en Tom Tom vechten met hun vijanden, juich als Einstein eindelijk een partner vindt.

Wallabies, koolamana lizards and crocodile hatchlings face the wild river's dangers.

Battling for dominion over the river with crocs; catching glimpses of an ultra-rare mangrove snake and an endangered nabarlek wallaby; humpback whale mothers raise their calves in the ocean; false killer whales.

Battling wind and waves to find a sea lion trapped in a plastic ring; visiting a rescue centre, where over 80 orphan seals must be fed several times a day to prepare for release into the wild; an Amazonian duck gets a miraculous operation.

The African savanna is an epic landscape, and whether it's head-bashing hippos, hormone-crazed elephants or dueling lions, battles that rage on the savanna are just as epic.

Welcome to India - a land of exotic animals and exotic warfare; monkeys stage dusty dust-ups, blackbucks wage open war on the open plains, and peacock dandies swing switchblades: these are colorful battles worthy of a vibrant land.

A huge storm sweeps an unusual patient into Hope for Wildlife, and Hope tries to return him to his home.

Battling wind and waves to find a sea lion trapped in a plastic ring; visiting a rescue centre, where over 80 orphan seals must be fed several times a day to prepare for release into the wild; an Amazonian duck gets a miraculous operation.

The African savanna is an epic landscape, and whether it's head-bashing hippos, hormone-crazed elephants or dueling lions, battles that rage on the savanna are just as epic.

Welcome to India - a land of exotic animals and exotic warfare; monkeys stage dusty dust-ups, blackbucks wage open war on the open plains, and peacock dandies swing switchblades: these are colorful battles worthy of a vibrant land.

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.

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.

Eoin starts his island voyage on Rathlin, then heads west for Malin Head and Inishtrahull meeting Basking Sharks and Dolphins en route, before going south to Achill Island and the story of the Irish Stoat.

Eoin visits a wondrous native woodland on Clare Island and as he sails his Galway Hooker through Connemara's turquoise waters he finds deserted islands home to skylarks and on the Aran Islands, Ireland's only native reptile.

Eoin is back in his Galway Hooker and sailing to the islands off County Kerry before heading south into his home waters off Cork and the end of his journey at Fastnet Rock.

Exploring the captivating cityscape, where Matnoor rules over the 30-member-strong Street Troop, before meeting the wilder Hill Troop's old alpha, Aarav.

Begroet een rijk seizoen als het water zich terugtrekt en kuddes terugkeren naar de oevers van de Chobe. Zie Keeza en haar welp er vandoor gaan terwijl Caller en Tom Tom vechten met hun vijanden, juich als Einstein eindelijk een partner vindt.

Wallabies, koolamana lizards and crocodile hatchlings face the wild river's dangers.

Battling for dominion over the river with crocs; catching glimpses of an ultra-rare mangrove snake and an endangered nabarlek wallaby; humpback whale mothers raise their calves in the ocean; false killer whales.

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

A newborn wildebeest faces a terrifying ordeal when it's taken by a lioness. The predator doesn't kill the calf and, instead, takes care of the newborn for an entire day.

Many species migrate in massive numbers.

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

A newborn wildebeest faces a terrifying ordeal when it's taken by a lioness. The predator doesn't kill the calf and, instead, takes care of the newborn for an entire day.

Many species migrate in massive numbers.

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.

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

A newborn wildebeest faces a terrifying ordeal when it's taken by a lioness. The predator doesn't kill the calf and, instead, takes care of the newborn for an entire day.

Many species migrate in massive numbers.

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 center; find out how the vet aids an aging fruit bat and a community rescues a one-eyed seal pup.

Massive elephant seals go nose to nose to win the title of beach master; giant petrels earn the nickname "murderous garbagemen"; a female humpback goes to extremes to protect her calf from amorous males.

Canada, where summer is short and time is tight, any time is the right time to fight; the mighty North provides the setting for bison, bald eagles and polar bears to wage some of the most heavy-duty fighting in the animal kingdom.

Counting down to the annual deer release, which could get shut down if a government inspection doesn't go according to plan; the staff scramble to help a hawk with a broken beak and vaccinate the raccoon unit against a potentially deadly virus.

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 center; find out how the vet aids an aging fruit bat and a community rescues a one-eyed seal pup.

Massive elephant seals go nose to nose to win the title of beach master; giant petrels earn the nickname "murderous garbagemen"; a female humpback goes to extremes to protect her calf from amorous males.

Canada, where summer is short and time is tight, any time is the right time to fight; the mighty North provides the setting for bison, bald eagles and polar bears to wage some of the most heavy-duty fighting in the animal kingdom.

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.

Geographical extremities and hungry predators make it impossible for the migrating herds to avoid casualties. But no matter what happens, the journey must go on.

The water bodies in Serengeti serve as a lifeline to many terrestrial, aerial and amphibious animals. Without them, the park's ecosystem cannot be considered whole.

Two researchers in Zimbabwe examine problems for Africa's population of wild dogs.

Getting acquainted with an array of ocean oddballs and learning how billions of years' worth of changes have shaped their looks and skills; meeting blind worms who fish, walking sharks, tree-climbing crabs and much more.

Feeling the love in the strange-but-heartwarming partnerships between some of Earth's oddest creatures; diving deep to see strange animals, from snapping shrimp to wolf eels, offer a hand to their fellow ocean-going weirdos to ensure mutual survival.

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

A newborn wildebeest faces a terrifying ordeal when it's taken by a lioness. The predator doesn't kill the calf and, instead, takes care of the newborn for an entire day.

Many species migrate in massive numbers.

A house cat named Smoky is at risk of diabetes and a barn cat named Ashes is in rough shape after being hit by a car; Savannah heads out with the Canadian Animal Task Force to round up, spay/neuter, and release dozens of feral cats from a village.

A dental surgery goes from one tooth to nine teeth for a pair of unsuspecting dog owners; Savannah must investigate to figure out why a ferret named Sophie has stopped peeing, and a bunny needs intervention to stop him from biting at his sutures.

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

Elephants in the Lilayi Elephant Nursery and Kafue National Park.

A house cat named Smoky is at risk of diabetes and a barn cat named Ashes is in rough shape after being hit by a car; Savannah heads out with the Canadian Animal Task Force to round up, spay/neuter, and release dozens of feral cats from a village.

A dental surgery goes from one tooth to nine teeth for a pair of unsuspecting dog owners; Savannah must investigate to figure out why a ferret named Sophie has stopped peeing, and a bunny needs intervention to stop him from biting at his sutures.

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

Elephants in the Lilayi Elephant Nursery and Kafue 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.

A house cat named Smoky is at risk of diabetes and a barn cat named Ashes is in rough shape after being hit by a car; Savannah heads out with the Canadian Animal Task Force to round up, spay/neuter, and release dozens of feral cats from a village.

A dental surgery goes from one tooth to nine teeth for a pair of unsuspecting dog owners; Savannah must investigate to figure out why a ferret named Sophie has stopped peeing, and a bunny needs intervention to stop him from biting at his sutures.

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

Elephants in the Lilayi Elephant Nursery and Kafue National Park.

Biologists race the clock as they try to figure out why North American loons are suddenly in danger, unlock the mysterious lives of these beloved birds, and ponder whether their cries will continue to be summer's soundtrack or go silent forever.

Learning to fight dirty with a guanaco, headbutting 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.

Feel the excitement as the team releases a pair of rehabbed gray seals just in time to welcome another orphaned duo. Cope with an early spring baby boom and watch Hope call in the big guns when a Canada goose shows up covered in porcupine quills.

Biologists race the clock as they try to figure out why North American loons are suddenly in danger, unlock the mysterious lives of these beloved birds, and ponder whether their cries will continue to be summer's soundtrack or go silent forever.

Learning to fight dirty with a guanaco, headbutting 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.

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.

Fascinating creatures thrive in the muck.

Rising sea levels threaten the small island nation of the Maldives.

Sharks are at risk in Costa Rica.

Experts examine how play affects the learning process for most animals in domestic and wild habitats.

Discovering how species buddy up for group games with astonishing benefits; how various animals, from young hyenas playing tug of war to mischievous monkeys getting rough and tumble, communicate the rules of their antics.

A house cat named Smoky is at risk of diabetes and a barn cat named Ashes is in rough shape after being hit by a car; Savannah heads out with the Canadian Animal Task Force to round up, spay/neuter, and release dozens of feral cats from a village.

A dental surgery goes from one tooth to nine teeth for a pair of unsuspecting dog owners; Savannah must investigate to figure out why a ferret named Sophie has stopped peeing, and a bunny needs intervention to stop him from biting at his sutures.

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

Elephants in the Lilayi Elephant Nursery and Kafue National Park.

Traveling to the Cook Islands, the destination of choice for 3,000 humpback whales ready to mate and raise their young; witnessing giant clams and green turtles thriving in the islands' massive coral reef; a glimpse into the evolutionary past.

The tiny-but-deadly mantises; how these notorious, alienlike insects capitalize on their versatility, strength, and aggressive attitude to become one of nature's most successful hunters.

The unique world of rats and mice; discovering why rodents and humans' thousands of years long, neighborly relationship isn't always harmonious; Juan Antonio depicts these agile animals in his sketchbook.

Into the watery world of frogs and toads; unlocking the mysteries that lurk in the dark places that these amphibians call home; Juan Antonio puts pencil to paper in his naturalist's sketchbook.

Following the canny red fox as it slinks away on a wide-ranging exploration of the Iberian Peninsula; Juan Antonio draws a detailed portrait in his naturalist's sketchbook.

Traveling to the Cook Islands, the destination of choice for 3,000 humpback whales ready to mate and raise their young; witnessing giant clams and green turtles thriving in the islands' massive coral reef; a glimpse into the evolutionary past.

The tiny-but-deadly mantises; how these notorious, alienlike insects capitalize on their versatility, strength, and aggressive attitude to become one of nature's most successful hunters.

The unique world of rats and mice; discovering why rodents and humans' thousands of years long, neighborly relationship isn't always harmonious; Juan Antonio depicts these agile animals in his sketchbook.

Into the watery world of frogs and toads; unlocking the mysteries that lurk in the dark places that these amphibians call home; Juan Antonio puts pencil to paper in his naturalist's sketchbook.

Following the canny red fox as it slinks away on a wide-ranging exploration of the Iberian Peninsula; Juan Antonio draws a detailed portrait in his naturalist's sketchbook.

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.

Traveling to the Cook Islands, the destination of choice for 3,000 humpback whales ready to mate and raise their young; witnessing giant clams and green turtles thriving in the islands' massive coral reef; a glimpse into the evolutionary past.

The tiny-but-deadly mantises; how these notorious, alienlike insects capitalize on their versatility, strength, and aggressive attitude to become one of nature's most successful hunters.

The unique world of rats and mice; discovering why rodents and humans' thousands of years long, neighborly relationship isn't always harmonious; Juan Antonio depicts these agile animals in his sketchbook.

Into the watery world of frogs and toads; unlocking the mysteries that lurk in the dark places that these amphibians call home; Juan Antonio puts pencil to paper in his naturalist's sketchbook.

Following the canny red fox as it slinks away on a wide-ranging exploration of the Iberian Peninsula; Juan Antonio draws a detailed portrait in his naturalist's sketchbook.

Along the world's longest border between Canada and the USA, wildlife lives with one foot in two worlds; animals walk a tightrope of barriers and conflicting regulations, where one step over the line can mean the difference between life and death.

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.

Get to know seven wildcats, including one who was caught in a trap, who can't wait to be released into their new home; rush to quarantine a pair of fox cubs who've arrived at the rehab clinic with a suspected case of avian flu.

Along the world's longest border between Canada and the USA, wildlife lives with one foot in two worlds; animals walk a tightrope of barriers and conflicting regulations, where one step over the line can mean the difference between life and death.

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.

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.

Go on a risky tagging mission and get a 360-degree view of feeding hot spots.

Hunt for signs of mating sharks and get a peek at their hidden pupping grounds.

Take a deep dive to find out what bull sharks and great whites do after sunset.

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.

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

Traveling to the Cook Islands, the destination of choice for 3,000 humpback whales ready to mate and raise their young; witnessing giant clams and green turtles thriving in the islands' massive coral reef; a glimpse into the evolutionary past.

The tiny-but-deadly mantises; how these notorious, alienlike insects capitalize on their versatility, strength, and aggressive attitude to become one of nature's most successful hunters.

The unique world of rats and mice; discovering why rodents and humans' thousands of years long, neighborly relationship isn't always harmonious; Juan Antonio depicts these agile animals in his sketchbook.

Into the watery world of frogs and toads; unlocking the mysteries that lurk in the dark places that these amphibians call home; Juan Antonio puts pencil to paper in his naturalist's sketchbook.

Following the canny red fox as it slinks away on a wide-ranging exploration of the Iberian Peninsula; Juan Antonio draws a detailed portrait in his naturalist's sketchbook.

The filmmakers explore the uncommon friendships between people and their unusual wild pets and their fascinating backstories.

Plunge into the clear seas to explore the Tubbataha Reef, which rests on an extinct underwater volcano where shallow lagoons shelter sea turtles and tiger sharks; take flight with tarsiers as they hunt insects using leaps between trees.

The world's largest land mammal lives in the Namib.

The filmmakers explore the uncommon friendships between people and their unusual wild pets and their fascinating backstories.

Plunge into the clear seas to explore the Tubbataha Reef, which rests on an extinct underwater volcano where shallow lagoons shelter sea turtles and tiger sharks; take flight with tarsiers as they hunt insects using leaps between trees.

The world's largest land mammal lives in the Namib.

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 filmmakers explore the uncommon friendships between people and their unusual wild pets and their fascinating backstories.

Plunge into the clear seas to explore the Tubbataha Reef, which rests on an extinct underwater volcano where shallow lagoons shelter sea turtles and tiger sharks; take flight with tarsiers as they hunt insects using leaps between trees.

The world's largest land mammal lives in the Namib.

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

Wildebeest battle for herd hierarchy, meerkats live the thug life, floppy fish fight it out on land and locusts give up their vegetarian ways in a frenzy of cannibalism; it all happens on the wild and wide-open landscape of South Africa.

The latitudes south of the Sahara offer vastly different battlegrounds for a wide range of warriors; male giraffes swing their heads like wrecking balls, zebras boast the most powerful kick in the animal kingdom, and chimpanzee warfare is familiar.

Chase down a weasel and her tiny kittens who have gone AWOL at the rehab. Hold your breath as Dr. Mikaela performs a rare medical procedure on a raccoon's injured tail, then meet Hope's new otter friend and the tiniest beaver the team has ever seen.

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

Wildebeest battle for herd hierarchy, meerkats live the thug life, floppy fish fight it out on land and locusts give up their vegetarian ways in a frenzy of cannibalism; it all happens on the wild and wide-open landscape of South Africa.

The latitudes south of the Sahara offer vastly different battlegrounds for a wide range of warriors; male giraffes swing their heads like wrecking balls, zebras boast the most powerful kick in the animal kingdom, and chimpanzee warfare is familiar.

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.

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.

Feel the heat of summer's arrival as supersize sea snails try to fend off an invading gang of coral-hungry starfish; accompany reef sharks as they prowl for a midnight meal and marvel at the slippery disguise a parrotfish uses to survive the night.

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.

The filmmakers explore the uncommon friendships between people and their unusual wild pets and their fascinating backstories.

Plunge into the clear seas to explore the Tubbataha Reef, which rests on an extinct underwater volcano where shallow lagoons shelter sea turtles and tiger sharks; take flight with tarsiers as they hunt insects using leaps between trees.

The world's largest land mammal lives in the Namib.

Gangs battle for dominance, their lives a constant struggle; locusts swarm, stripping landscapes bare; the coconut octopus ambushes prey, a master of deception; nature reveals its raw power, where only the strongest survive.

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.".

Gangs battle for dominance, their lives a constant struggle; locusts swarm, stripping landscapes bare; the coconut octopus ambushes prey, a master of deception; nature reveals its raw power, where only the strongest survive.

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.".

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.

Gangs battle for dominance, their lives a constant struggle; locusts swarm, stripping landscapes bare; the coconut octopus ambushes prey, a master of deception; nature reveals its raw power, where only the strongest survive.

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.".

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.

Steering clear of alphas, whose horns, claws and other protective gear keep them ready for battle, no matter what the weather dishes out; examining killer Highland cow horns, plucky mallard bills, razor-edged wolverine claws, and more.

A male brown hare throws punches at his beloved; admiring a sandhill crane dance battle; ibexes butt heads (literally) during mating season; why leopards are stealth masters.

Scramble as the staff tries to find a place for each of the orphaned skunks, raccoons, and groundhogs that are streaming through the rehab's doors; then deal with the deadly side of spring as the team tries to save a hare wounded by a weed whacker.

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.

Steering clear of alphas, whose horns, claws and other protective gear keep them ready for battle, no matter what the weather dishes out; examining killer Highland cow horns, plucky mallard bills, razor-edged wolverine claws, and more.

A male brown hare throws punches at his beloved; admiring a sandhill crane dance battle; ibexes butt heads (literally) during mating season; why leopards are stealth masters.

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.

Human influence and effect on the beaches of California.

Embark on a journey as Lizzie traverses air, land and sea to encounter Alaskan wildlife and explore some of the world's most remote corners; join scientists eavesdropping on underwater Arctic residents.

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.

Gangs battle for dominance, their lives a constant struggle; locusts swarm, stripping landscapes bare; the coconut octopus ambushes prey, a master of deception; nature reveals its raw power, where only the strongest survive.

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.".

Revealing the family life of the orca and dolphins that wear sponges on their noses.

Uncover the profound significance and uncertain future of our rivers.

Chris Packham reveals the intelligent cons and deceitful behavior that animals use to survive and prosper in the game of life, from disguising themselves to outwit predators, to kidnapping babies to save their own offspring.

Revealing the family life of the orca and dolphins that wear sponges on their noses.

Uncover the profound significance and uncertain future of our rivers.

Chris Packham reveals the intelligent cons and deceitful behavior that animals use to survive and prosper in the game of life, from disguising themselves to outwit predators, to kidnapping babies to save their own offspring.

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.

Revealing the family life of the orca and dolphins that wear sponges on their noses.

Uncover the profound significance and uncertain future of our rivers.

Chris Packham reveals the intelligent cons and deceitful behavior that animals use to survive and prosper in the game of life, from disguising themselves to outwit predators, to kidnapping babies to save their own offspring.

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

Meeting alphas who get by with a little help from their friends; the inescapable gang mentality of mating male dolphins; ant colonies' unique scents; female geladas always get the last word; wolves hunt family-style.

Celebrating small but mighty animal warriors armed with sheaves of scary weapons; admiring nutrias' stink bombs; honey badgers' needlelike choppers; black-tailed gulls' razor-sharp beaks; the killer talons on dive-bombing peregrine falcons.

Observe a pair of white, piebald fawns that pose a big rehab challenge; check out an albino skunk displaced by flash floods, see Dr. Mikaela race to save a parasite-infected chipmunk, and monitor a groundhog fighting for its life after a dog attack.

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

Meeting alphas who get by with a little help from their friends; the inescapable gang mentality of mating male dolphins; ant colonies' unique scents; female geladas always get the last word; wolves hunt family-style.

Celebrating small but mighty animal warriors armed with sheaves of scary weapons; admiring nutrias' stink bombs; honey badgers' needlelike choppers; black-tailed gulls' razor-sharp beaks; the killer talons on dive-bombing peregrine falcons.

An inside look at the Nyaru Menteng Rescue Center in Borneo to explore how the orangutan school curriculum works, from nursery through graduation.

The story of some of the most impressive creatures in the world, two Nile crocodiles, living together in the African river.

Two elephants journey from bondage and servitude to their new lives in Elephant Haven's forest, where they are able to begin their recovery and rehabilitation in the wild.

Elephants living in Tanzania.

Observe the fragile and evolving friendship between humans and elephants.

Two researchers in Zimbabwe examine problems for Africa's population of wild dogs.

Revealing the family life of the orca and dolphins that wear sponges on their noses.

Uncover the profound significance and uncertain future of our rivers.

Chris Packham reveals the intelligent cons and deceitful behavior that animals use to survive and prosper in the game of life, from disguising themselves to outwit predators, to kidnapping babies to save their own offspring.