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.

More than a billion people around the world commute into cities each day to take advantage of the riches on offer, and they are not alone. The world's wildlife is commuting too. A steady flow of animals journey in and out of cities to find food.

A group of weasels is ready to be released; a volunteer attempts to rescue an eagle; a gull flies free.

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

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

Drifting along this mighty river through a winding three hundred and fifteen miles of New York state's most stunning natural landscapes; before reaching the destination at the iconic Statue of Liberty.

Bill Nighy narrates a trip along the River Po, traveling across northern Italy from the snow-capped Alps to the delta where it meets the Adriatic Sea.

Preparations for the annual open house.

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.

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.

A feature on the Andean Altiplano, a rugged plain in Bolivia.

Preparations for the annual open house.

Canada's east coast experiences all four seasons.

Overpopulation of deer in Hampton, N.B.

As the urban world grows, animals are displaced from land that belonged to them; from herons to humpback whales, the stories of these wild outcasts are the most captivating of all.

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.

Sizing up a primate no bigger than a mouse, a chameleon that fits on a fingertip and other minuscule creatures with biologist Patrick Aryee; learning why being tiny can be an advantage; some ingenious adaptations to life's big challenges.

A veterinarian and his team encounter dangerous challenges as they care for endangered animals at a hospital in the Guatemalan jungle.

Wildlife and the environment.

As the urban world grows, animals are displaced from land that belonged to them; from herons to humpback whales, the stories of these wild outcasts are the most captivating of all.

Scientists are studying cats in greater detail than before, and their groundbreaking finds challenge the conventional ideas.

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.

Contemplating shark community hierarchies as the northern team studies how young blacktips learn social and survival skills; rushing to Rainbow Beach with the southern team, who are eager to witness the sand tiger shark's mating.

Rare penguins are locked in a daily game of cat and mouse with giant New Zealand sea lions; the sea lions also live in a tumultuous world, where pups must battle the elements to survive.

New Zealand's dark fjords harbor creatures normally found in the deep; as winter approaches, bottlenose dolphins must escape their freezing fjord, while in a mountain river, a longfin eel heeds the call of the sea.

Contemplating shark community hierarchies as the northern team studies how young blacktips learn social and survival skills; rushing to Rainbow Beach with the southern team, who are eager to witness the sand tiger shark's mating.

Rare penguins are locked in a daily game of cat and mouse with giant New Zealand sea lions; the sea lions also live in a tumultuous world, where pups must battle the elements to survive.

New Zealand's dark fjords harbor creatures normally found in the deep; as winter approaches, bottlenose dolphins must escape their freezing fjord, while in a mountain river, a longfin eel heeds the call of the sea.

Wildlife and the environment.

Preparations for the annual open house.

Canada's east coast experiences all four seasons.

Overpopulation of deer in Hampton, N.B.

Bill Nighy narrates a trip along the River Po, traveling across northern Italy from the snow-capped Alps to the delta where it meets the Adriatic Sea.

The crew explores the Atacama Desert, the world's driest non-polar region.

Two orphaned bobcats struggle to bond.

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.

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.

The crew explores the Atacama Desert, the world's driest non-polar region.

Two orphaned bobcats struggle to bond.

Filmed in the largest contiguous wetland in the world, this area of the Pantanal contains numerous jaguars who hunt caiman and capybara and are up to twice the weight of jaguars elsewhere.

When the all-female Hollywood pride encounters the Nomads, a new pride of rival males, they might have found the answer to their mating dry spell.

An attack leaves matriarch Ava incapacitated; Sam finds a tiny hyena cub all alone; the hyenas and the MK pride battle over a buffalo; Nathan discovers the MKs are hiding more cubs.

A group of four young lions search for a pride to take over on the western bank of the Luangwa River.

An aging leopard in Zambia is challenged by a younger female.

Lions along the Luangwe River raise their cubs.

A Lion cub runt must survive alone.

Scientists are studying cats in greater detail than before, and their groundbreaking finds challenge the conventional ideas.

Filmed in the largest contiguous wetland in the world, this area of the Pantanal contains numerous jaguars who hunt caiman and capybara and are up to twice the weight of jaguars elsewhere.

Following two cheetah mothers -- Savannah and her four cubs, in the Tswalu Kalahari Reserve, and Chili and her five kittens in the Great Karoo Wilderness -- as they navigate a harsh environment, dangerous wildlife and dwindling prey.

Wildlife filmmaker Gordon Buchanan gets close to wild cheetah in the Kalahari, experiencing first-hand the very real dangers these big cats face.

A group of four young lions search for a pride to take over on the western bank of the Luangwa River.

Following two cheetah mothers -- Savannah and her four cubs, in the Tswalu Kalahari Reserve, and Chili and her five kittens in the Great Karoo Wilderness -- as they navigate a harsh environment, dangerous wildlife and dwindling prey.

Wildlife filmmaker Gordon Buchanan gets close to wild cheetah in the Kalahari, experiencing first-hand the very real dangers these big cats face.

A Lion cub runt must survive alone.

Scientists are studying cats in greater detail than before, and their groundbreaking finds challenge the conventional ideas.

Two orphaned bobcats struggle to bond.

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.

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.

Examining the science behind the birth of the universe.

Mercury, one of the nearest planets to earth, has eluded astronomers' best efforts to learn its secrets until missions like Mariner and Messenger.

A feature on the Andean Altiplano, a rugged plain in Bolivia.

Hope finally moves into the new rehab and the old buildings come down.

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.

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.

A feature on the Andean Altiplano, a rugged plain in Bolivia.

Hope finally moves into the new rehab and the old buildings come down.

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

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

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

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

The filmmaker sheds light on the long-standing rivalry between lions and hyenas in hunting and how they survive the wilderness.

Endangered carnivores of Africa.

In Kafue National Park, a team of biologists and vets from the Zambian Carnivore Programme, races to save and protect Africa's apex predators.

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

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

The filmmaker sheds light on the long-standing rivalry between lions and hyenas in hunting and how they survive the wilderness.

Endangered carnivores of Africa.

In Kafue National Park, a team of biologists and vets from the Zambian Carnivore Programme, races to save and protect Africa's apex predators.

Hope finally moves into the new rehab and the old buildings come down.

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.

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.

Examining how cosmic rays are produced and what that can tell us about the universe.

The Fermi Paradox asks why another civilization has not presented itself.

A feature on Zion National Park, a kingdom of towering rocks, deep canyons, and sandstone walls.

Valentines day at the rehab.

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.

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.

A feature on Zion National Park, a kingdom of towering rocks, deep canyons, and sandstone walls.

Valentines day at the rehab.

Following two cheetah mothers -- Savannah and her four cubs, in the Tswalu Kalahari Reserve, and Chili and her five kittens in the Great Karoo Wilderness -- as they navigate a harsh environment, dangerous wildlife and dwindling prey.

Wildlife filmmaker Gordon Buchanan gets close to wild cheetah in the Kalahari, experiencing first-hand the very real dangers these big cats face.

The filmmaker provides insights into the lives of predators in the African wilderness and the strategies they employ to survive.

Twin male lions have ruled the Nsefu Pride for three years.

After the dry season lowers the waters, siblings Kimba and Maya risk crossing the river to search for their parents; they run the gauntlet of the densest populations of crocs and hippos in Africa.

During the last few weeks of the dry season, the prides stick close to the only available water in the river; in Luangwa, the scent of a hippo kill compels the Hollywoods to cross the river.

The dry season is approaching its end, and the MK pride faces its toughest moment yet; their matriarch and best hunter, Surabi, is gored by a buffalo and her survival hangs in the balance; one of the youngest members of the pride is lost and alone.

Following two cheetah mothers -- Savannah and her four cubs, in the Tswalu Kalahari Reserve, and Chili and her five kittens in the Great Karoo Wilderness -- as they navigate a harsh environment, dangerous wildlife and dwindling prey.

Wildlife filmmaker Gordon Buchanan gets close to wild cheetah in the Kalahari, experiencing first-hand the very real dangers these big cats face.

The filmmaker provides insights into the lives of predators in the African wilderness and the strategies they employ to survive.

Twin male lions have ruled the Nsefu Pride for three years.

After the dry season lowers the waters, siblings Kimba and Maya risk crossing the river to search for their parents; they run the gauntlet of the densest populations of crocs and hippos in Africa.

During the last few weeks of the dry season, the prides stick close to the only available water in the river; in Luangwa, the scent of a hippo kill compels the Hollywoods to cross the river.

The dry season is approaching its end, and the MK pride faces its toughest moment yet; their matriarch and best hunter, Surabi, is gored by a buffalo and her survival hangs in the balance; one of the youngest members of the pride is lost and alone.

Valentines day at the rehab.

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.

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.

Examining Landsat 8, the advanced planetary explorer with a 900 million dollar price tag, which is designed to reveal complex and ever-changing details undetectable by the human eye.

The second largest planet is also a mini-solar system with 60 moons and those crazy rings.

Footage of the remote desert of Arizona, including the state's canyons, towering cliffs and fossilized dunes.

Hope scrambles to save the animals when a burglar busts down the door to the rehab, as the spring baby boom brings in a flood of injured and orphaned animals.

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.

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.

Footage of the remote desert of Arizona, including the state's canyons, towering cliffs and fossilized dunes.

Hope scrambles to save the animals when a burglar busts down the door to the rehab, as the spring baby boom brings in a flood of injured and orphaned animals.

The story of five male cubs growing up on the Skeleton Coast of Namibia; the lions cover vast distances, thriving as nomadic hunters and becoming the youngest pride males ever to rule Namib's ancient desert realm; one brother sets off alone.

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

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.

In South Africa's Greater Kruger Park, a lion cub finds her place in the wild under the guidance of a devoted father, a fierce mother and a playful sister.

Cheetah cub Usana is born with the odds stacked against her, but she is lucky to have an amazing mother that will stop at nothing to keep her cubs safe.

Test limits with jaguar cub Frida, who's honing her survival skills in Brazil's Caiman Lodge Reserve.

Finding tracks outside his home, filmmaker Casey Anderson begins a year-long obsession with an adult mountain lion, named Mama Mo, and her three cubs; Anderson tracks Mama Mo's every move, forging a unique relationship with this powerful predator.

The story of five male cubs growing up on the Skeleton Coast of Namibia; the lions cover vast distances, thriving as nomadic hunters and becoming the youngest pride males ever to rule Namib's ancient desert realm; one brother sets off alone.

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

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.

In South Africa's Greater Kruger Park, a lion cub finds her place in the wild under the guidance of a devoted father, a fierce mother and a playful sister.

Cheetah cub Usana is born with the odds stacked against her, but she is lucky to have an amazing mother that will stop at nothing to keep her cubs safe.

Test limits with jaguar cub Frida, who's honing her survival skills in Brazil's Caiman Lodge Reserve.

Finding tracks outside his home, filmmaker Casey Anderson begins a year-long obsession with an adult mountain lion, named Mama Mo, and her three cubs; Anderson tracks Mama Mo's every move, forging a unique relationship with this powerful predator.

Hope scrambles to save the animals when a burglar busts down the door to the rehab, as the spring baby boom brings in a flood of injured and orphaned animals.

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.

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.

The Dawn mission explores the asteroid Vesta and dwarf planet Ceres.

The search for water is actually the search for life, and that search is taking man to some unusual places, including a moon of Saturn.

The Bahamas are home to migratory birds, green turtles, and rock iguanas.

Hope fights to save a family of foxes; the nursery is hit by a mysterious outbreak.

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.

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.

The Bahamas are home to migratory birds, green turtles, and rock iguanas.

Hope fights to save a family of foxes; the nursery is hit by a mysterious outbreak.

The lions of Tanzania are the only cat species to live in groups; tiny rusty spotted cat of Sri Lankais 200 times smaller than a lion but just as curious.

Following the nocturnal pursuits of the tiny black-footed cat in South Africa that stakes its claim to the title of the world's deadliest.

When the all-female Hollywood pride encounters the Nomads, a new pride of rival males, they might have found the answer to their mating dry spell.

An attack leaves matriarch Ava incapacitated; Sam finds a tiny hyena cub all alone; the hyenas and the MK pride battle over a buffalo; Nathan discovers the MKs are hiding more cubs.

A group of four young lions search for a pride to take over on the western bank of the Luangwa River.

A leopard mother and her cubs fight to survive, and resort to fishing for food, in the wilds of Botswana.

Adolescent lions face many challenges.

A female leopard named Olimba in Zambia's Luangwa Valley.

The lions of Tanzania are the only cat species to live in groups; tiny rusty spotted cat of Sri Lankais 200 times smaller than a lion but just as curious.

Following the nocturnal pursuits of the tiny black-footed cat in South Africa that stakes its claim to the title of the world's deadliest.

When the all-female Hollywood pride encounters the Nomads, a new pride of rival males, they might have found the answer to their mating dry spell.

An attack leaves matriarch Ava incapacitated; Sam finds a tiny hyena cub all alone; the hyenas and the MK pride battle over a buffalo; Nathan discovers the MKs are hiding more cubs.

A group of four young lions search for a pride to take over on the western bank of the Luangwa River.

A leopard mother and her cubs fight to survive, and resort to fishing for food, in the wilds of Botswana.

Hope fights to save a family of foxes; the nursery is hit by a mysterious outbreak.

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.

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.

A vehicle the size of a small car spent a year on Mars.

Historical and modern examinations of constellations.

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

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

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.

Elands lock corkscrew horns; storks rattle sabre-shaped beaks; rhinos scare the competition with massive horns; striped marlins spear unsuspecting prey.

Lake Superior has the longest undeveloped shoreline of Canada's Great lakes.

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

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

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

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

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

In South Africa's Greater Kruger Park, a lion cub finds her place in the wild under the guidance of a devoted father, a fierce mother and a playful sister.

Cheetah cub Usana is born with the odds stacked against her, but she is lucky to have an amazing mother that will stop at nothing to keep her cubs safe.

Test limits with jaguar cub Frida, who's honing her survival skills in Brazil's Caiman Lodge Reserve.

Cheetah cub Usana is born with the odds stacked against her, but she is lucky to have an amazing mother that will stop at nothing to keep her cubs safe.

Test limits with jaguar cub Frida, who's honing her survival skills in Brazil's Caiman Lodge Reserve.

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

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.

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.

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

Escaping on traditional boats for a voyage through the green heart of southwest France; drinking wine and hunting for truffles with those who live, work and play in the handsome towns of the Dordogne.

Lynn plays surrogate to baby beavers; Zach is forced to follow a seal along the coastline; a patient returns after a release goes wrong.

Tasmanian devils get into food fights with rivals; how dung beetles roll over the competition; wild boars' fierce mating strategies; hyenas' bone-crushing teeth demolish any meal.

The blonde manes of golden snub-nose monkeys; pink flamingo feathers brought on by an all-crustacean diet; the markings of gemsboks and cheetahs.

The Niagara Escarpment Biosphere Reserve begins with the mighty Niagara Falls and winds its way through deep valleys and caves.

Lynn plays surrogate to baby beavers; Zach is forced to follow a seal along the coastline; a patient returns after a release goes wrong.

Five desert lions come of age in the African Namib.

After the dry season lowers the waters, siblings Kimba and Maya risk crossing the river to search for their parents; they run the gauntlet of the densest populations of crocs and hippos in Africa.

During the last few weeks of the dry season, the prides stick close to the only available water in the river; in Luangwa, the scent of a hippo kill compels the Hollywoods to cross the river.

The dry season is approaching its end, and the MK pride faces its toughest moment yet; their matriarch and best hunter, Surabi, is gored by a buffalo and her survival hangs in the balance; one of the youngest members of the pride is lost and alone.

The filmmaker sheds light on the long-standing rivalry between lions and hyenas in hunting and how they survive the wilderness.

Leaving their native home in South Africa, seven lions are being transported to Akagera National Park, covering thousands of miles to the heart of Africa, in order to revive the local lion species.

Following two cheetah mothers -- Savannah and her four cubs, in the Tswalu Kalahari Reserve, and Chili and her five kittens in the Great Karoo Wilderness -- as they navigate a harsh environment, dangerous wildlife and dwindling prey.

Wildlife filmmaker Gordon Buchanan gets close to wild cheetah in the Kalahari, experiencing first-hand the very real dangers these big cats face.

During the last few weeks of the dry season, the prides stick close to the only available water in the river; in Luangwa, the scent of a hippo kill compels the Hollywoods to cross the river.

Leaving their native home in South Africa, seven lions are being transported to Akagera National Park, covering thousands of miles to the heart of Africa, in order to revive the local lion species.

Lynn plays surrogate to baby beavers; Zach is forced to follow a seal along the coastline; a patient returns after a release goes wrong.

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.

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.

Escaping on traditional boats for a voyage through the green heart of southwest France; drinking wine and hunting for truffles with those who live, work and play in the handsome towns of the Dordogne.

Lake Superior has the longest undeveloped shoreline of Canada's Great lakes.

Jennie and Stephanie try to save a harbour seal pup.

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.

Elands lock corkscrew horns; storks rattle sabre-shaped beaks; rhinos scare the competition with massive horns; striped marlins spear unsuspecting prey.

Lake Superior has the longest undeveloped shoreline of Canada's Great lakes.

Jennie and Stephanie try to save a harbour seal pup.

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.

Elands lock corkscrew horns; storks rattle sabre-shaped beaks; rhinos scare the competition with massive horns; striped marlins spear unsuspecting prey.

A recompilation of the best moments of Wild Latam, including capuchin monkeys breaking nuts in Brazil, pink dolphins swimming in the Amazon, the munguba tree, elephant seals, and more.

On Argentina's coasts, hundreds of thousands of penguins gather; elephant seals fight over their harems, and sea lions face ambush; further inland, indigenous armadillos inhabited vast plains.

The desert of Chile is the driest in the world, but the marine currents are thought to be the richest on the planet; immense schools of fish swim under constant siege.

A recompilation of the best moments of Wild Latam, including capuchin monkeys breaking nuts in Brazil, pink dolphins swimming in the Amazon, the munguba tree, elephant seals, and more.

On Argentina's coasts, hundreds of thousands of penguins gather; elephant seals fight over their harems, and sea lions face ambush; further inland, indigenous armadillos inhabited vast plains.

Contemplating shark community hierarchies as the northern team studies how young blacktips learn social and survival skills; rushing to Rainbow Beach with the southern team, who are eager to witness the sand tiger shark's mating.

Rare penguins are locked in a daily game of cat and mouse with giant New Zealand sea lions; the sea lions also live in a tumultuous world, where pups must battle the elements to survive.

New Zealand's dark fjords harbor creatures normally found in the deep; as winter approaches, bottlenose dolphins must escape their freezing fjord, while in a mountain river, a longfin eel heeds the call of the sea.

Frigate birds steal meals from smaller seabirds; a mongoose-run spa with a grateful warthog; decoding an African elephant's secret message; lovelorn capuchin monkeys hurl rocks to attract prospective mates.

Family is everything, at least to a good number of animals; many species live in families, clans or groups; the survival of each individual depends on the family, and the family depends on the union of all its components.

A majestic Asian elephant who survived a catastrophic flood at his zoo in Tbilisi, Georgia has a badly infected tusk; surgeons race to remove the tusk and save the gentle giant's life.

Frigate birds steal meals from smaller seabirds; a mongoose-run spa with a grateful warthog; decoding an African elephant's secret message; lovelorn capuchin monkeys hurl rocks to attract prospective mates.

Family is everything, at least to a good number of animals; many species live in families, clans or groups; the survival of each individual depends on the family, and the family depends on the union of all its components.

A majestic Asian elephant who survived a catastrophic flood at his zoo in Tbilisi, Georgia has a badly infected tusk; surgeons race to remove the tusk and save the gentle giant's life.

Lake Superior has the longest undeveloped shoreline of Canada's Great lakes.

Jennie and Stephanie try to save a harbour seal pup.

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.

Elands lock corkscrew horns; storks rattle sabre-shaped beaks; rhinos scare the competition with massive horns; striped marlins spear unsuspecting prey.

Studies are currently under way looking for evidence of dark energy in the movement of galaxies.

Lunar and solar eclipses.

The Niagara Escarpment Biosphere Reserve begins with the mighty Niagara Falls and winds its way through deep valleys and caves.

When a fawn is found stuck in thick, toxic tar, Hope assembles her entire team to wash and care for it in a desperate bid to save its life.

Tasmanian devils get into food fights with rivals; how dung beetles roll over the competition; wild boars' fierce mating strategies; hyenas' bone-crushing teeth demolish any meal.

The blonde manes of golden snub-nose monkeys; pink flamingo feathers brought on by an all-crustacean diet; the markings of gemsboks and cheetahs.

The Niagara Escarpment Biosphere Reserve begins with the mighty Niagara Falls and winds its way through deep valleys and caves.

When a fawn is found stuck in thick, toxic tar, Hope assembles her entire team to wash and care for it in a desperate bid to save its life.

Tasmanian devils get into food fights with rivals; how dung beetles roll over the competition; wild boars' fierce mating strategies; hyenas' bone-crushing teeth demolish any meal.

The blonde manes of golden snub-nose monkeys; pink flamingo feathers brought on by an all-crustacean diet; the markings of gemsboks and cheetahs.

South Luangwa National Park on tip of Africa's Great Rift Valley.

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

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

South Luangwa National Park on tip of Africa's Great Rift Valley.

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

Frigate birds steal meals from smaller seabirds; a mongoose-run spa with a grateful warthog; decoding an African elephant's secret message; lovelorn capuchin monkeys hurl rocks to attract prospective mates.

Family is everything, at least to a good number of animals; many species live in families, clans or groups; the survival of each individual depends on the family, and the family depends on the union of all its components.