Join vets Emily and Martine in the OR, where Dolly the koala's spaying surgery takes a scary turn; aid a run-over echidna with vet Nigel; see rescue officer Chantelle's slick fix for a snared lizard; probe a possible birdnapping with vet Karina.

Each species evolves unique tools to outpace rivals in the eat-or-be-eaten game, taking to the skies is the ultimate advantage.

Cape fur seals breed on Africa's west coast.

Join vets Emily and Martine in the OR, where Dolly the koala's spaying surgery takes a scary turn; aid a run-over echidna with vet Nigel; see rescue officer Chantelle's slick fix for a snared lizard; probe a possible birdnapping with vet Karina.

Each species evolves unique tools to outpace rivals in the eat-or-be-eaten game, taking to the skies is the ultimate advantage.

Cape fur seals breed on Africa's west coast.

Sharks are at risk in Costa Rica.

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.

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.

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

Sharks are at risk in Costa Rica.

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.

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.

Food-obsessed Beni receives an educational lesson from the local dominant male Petruk; Spanser, a former illegal pet, attempts to control his sweet tooth.

Sharks are at risk in Costa Rica.

From hippos and their exfoliating fish friends, to ravens and their wolverine dinner dates, Bill Bailey introduces the most extraordinary partnerships in nature.

Revisiting the Savute Marsh's pride of lions in Southern Africa, who re-wrote the laws of nature and started to hunt elephants in order to stave off starvation and survive.

Meet the Kyambura clan, which has been trapped in a lush gorge in Africa's Albertine Rift for 15 years. Witness the daily life-and-death struggle of its 20 remaining chimpanzees, who must find food, elude predators, and try to raise a new generation.

Soar with Earth's fastest animal, the peregrine falcon, as it reaches mind-bending speeds of over 240 mph. Meet city falcons in Chicago, see handler Lloyd Buck test a feathered family, and find out if Rudi the peregrine can outpace an Olympic skier.

Join vets Emily and Martine in the OR, where Dolly the koala's spaying surgery takes a scary turn; aid a run-over echidna with vet Nigel; see rescue officer Chantelle's slick fix for a snared lizard; probe a possible birdnapping with vet Karina.

Each species evolves unique tools to outpace rivals in the eat-or-be-eaten game, taking to the skies is the ultimate advantage.

Cape fur seals breed on Africa's west coast.

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.

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.

Food-obsessed Beni receives an educational lesson from the local dominant male Petruk; Spanser, a former illegal pet, attempts to control his sweet tooth.

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.

The Wild Coast of South Africa, stretching 170 miles from East London to the KwaZulu-Natal border, is comprised of rivers that empty into the sea and indigenous forest.

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

The Wild Coast of South Africa, stretching 170 miles from East London to the KwaZulu-Natal border, is comprised of rivers that empty into the sea and indigenous forest.

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.

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

The Wild Coast of South Africa, stretching 170 miles from East London to the KwaZulu-Natal border, is comprised of rivers that empty into the sea and indigenous forest.

The moose and wolves of Lake Superior battle.

The Asian carp, an invasive species, travels through North American waters, eating, breeding and decimating native fish populations.

Researchers continue to fight for the survival of the Lake Erie Watersnake, a species on the brink of extinction; a new source of food could mean the snakes have a future after all, so long as the lake's algae blooms cooperate.

Some people are fighting to save the endangered massasauga rattlesnake, which was vilified for years.

The peregrine falcon population has been rising in numbers.

Animals that inhabit waters controlled by dams are put in danger.

Flying squirrels leaping through the air.

Sometimes animals get a second chance.

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.

As winter turns to spring, temperatures rise and Yellowstone bursts into life; beavers feast on new green shoots, baby bison take their first faltering steps and grizzly cubs emerge from their dens.

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.

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

As winter turns to spring, temperatures rise and Yellowstone bursts into life; beavers feast on new green shoots, baby bison take their first faltering steps and grizzly cubs emerge from their dens.

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.

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

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

As winter turns to spring, temperatures rise and Yellowstone bursts into life; beavers feast on new green shoots, baby bison take their first faltering steps and grizzly cubs emerge from their dens.

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.

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

The coastline of Mozambique attracts some of the world's largest filter feeders. Two of Mozambique's leading marine researchers, Andrea Marshall and Nakia Cullan, set out to find one of the ocean's most secretive animals.

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.

Never seen before footage of Hope's greatest stories.

The coastline of Mozambique attracts some of the world's largest filter feeders. Two of Mozambique's leading marine researchers, Andrea Marshall and Nakia Cullan, set out to find one of the ocean's most secretive animals.

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.

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

The coastline of Mozambique attracts some of the world's largest filter feeders. Two of Mozambique's leading marine researchers, Andrea Marshall and Nakia Cullan, set out to find one of the ocean's most secretive animals.

Tanzania's Ngorongoro Crater and surrounding areas.

Large cat species in Africa.

The iconic `Big Five' of the savannah.

Africa's dung beetles play a huge role in its ecosystem.

As winter turns to spring, temperatures rise and Yellowstone bursts into life; beavers feast on new green shoots, baby bison take their first faltering steps and grizzly cubs emerge from their dens.

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.

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

The 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.

Uncover the profound significance and uncertain future of our rivers.

Our planet's freshwater lakes are cradles of life.

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.

Uncover the profound significance and uncertain future of our rivers.

Our planet's freshwater lakes are cradles of life.

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

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.

Uncover the profound significance and uncertain future of our rivers.

Our planet's freshwater lakes are cradles of life.

Humpbacks and whale sharks visit the coast of Mozambique.

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

Humpbacks and whale sharks visit the coast of Mozambique.

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.

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

Humpbacks and whale sharks visit the coast of Mozambique.

Cape Breton Highlands National Park faces destruction by various species.

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

The complicated relationships of crustaceans.

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.

Canada's east coast experiences all four seasons.

Overpopulation of deer in Hampton, N.B.

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

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.

Uncover the profound significance and uncertain future of our rivers.

Our planet's freshwater lakes are cradles of life.

Elephants living in Tanzania.

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.

An up-close look at the character traits exhibited by different species of animals when it comes to survival amid any kind of perceived danger.

Elephants living in Tanzania.

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.

An up-close look at the character traits exhibited by different species of animals when it comes to survival amid any kind of perceived danger.

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

Elephants living in Tanzania.

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.

An up-close look at the character traits exhibited by different species of animals when it comes to survival amid any kind of perceived danger.

Plankton are the basis of the world's largest food web.

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.

Hope cares for the first two beavers to arrive at the rehab centre and learns the fate of her most famous patient.

Plankton are the basis of the world's largest food web.

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.

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

Plankton are the basis of the world's largest food web.

Visiting the last stronghold of the giant river otter in Brazil's beautiful Pantanal wetland to track pup Rio and his siblings as they test the waters, team up to evade a jaguar ambush, and become a cohesive family unit.

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

Follow 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.

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

Elephants living in Tanzania.

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.

An up-close look at the character traits exhibited by different species of animals when it comes to survival amid any kind of perceived danger.

Celebrate as a newly arrived trio of sisters teaches Winston about friendship.

Soothing a bitten koala and itchy possums.

Celebrate as a newly arrived trio of sisters teaches Winston about friendship.

Soothing a bitten koala and itchy possums.

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

Celebrate as a newly arrived trio of sisters teaches Winston about friendship.

Soothing a bitten koala and itchy possums.

The great white shark is one of the most iconic ocean creatures.

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.

Hope and Dr. Barry have their hands full wrangling five baby black bears.

The great white shark is one of the most iconic ocean creatures.

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.

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

The great white shark is one of the most iconic ocean creatures.

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

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

The great plains of Africa are home to some of the most iconic animals on the planet. Growing up here means safari babies face immense challenges that will really test them.

Many animals that live in water come on land to have their babies. Being born this way presents some major challenges for water babies to overcome. For some, simply getting to water in the first place can be the biggest trial of their young lives.

Celebrate as a newly arrived trio of sisters teaches Winston about friendship.

Soothing a bitten koala and itchy possums.

Cinematic shipwrecks of the Bahamas.

Saying goodbye to the tropics and dipping into the cool southern-coast waters; witnessing grey nurse sharks, shape-shifting cuttlefish and blue whales; playing with penguins and sea lions.

Completing the trip's final lap in the untamed lands where Australia's interior desert meets the Indian Ocean; confronting the challenges of survival in the region; Lizzie dives with tiger sharks, manta rays and nomadic turtles.

Cinematic shipwrecks of the Bahamas.

Saying goodbye to the tropics and dipping into the cool southern-coast waters; witnessing grey nurse sharks, shape-shifting cuttlefish and blue whales; playing with penguins and sea lions.

Completing the trip's final lap in the untamed lands where Australia's interior desert meets the Indian Ocean; confronting the challenges of survival in the region; Lizzie dives with tiger sharks, manta rays and nomadic turtles.

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

Cinematic shipwrecks of the Bahamas.

Saying goodbye to the tropics and dipping into the cool southern-coast waters; witnessing grey nurse sharks, shape-shifting cuttlefish and blue whales; playing with penguins and sea lions.

Completing the trip's final lap in the untamed lands where Australia's interior desert meets the Indian Ocean; confronting the challenges of survival in the region; Lizzie dives with tiger sharks, manta rays and nomadic turtles.

Sharks may be much more intelligent than previously thought.

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.

The first fawn of the year arrives at the rehab centre; two volunteers plan to make rehab a lifelong commitment.

Sharks may be much more intelligent than previously thought.

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.

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

Sharks may be much more intelligent than previously thought.

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 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.

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

Life thrives in the Garden Route National Park.

Cinematic shipwrecks of the Bahamas.

Saying goodbye to the tropics and dipping into the cool southern-coast waters; witnessing grey nurse sharks, shape-shifting cuttlefish and blue whales; playing with penguins and sea lions.

Completing the trip's final lap in the untamed lands where Australia's interior desert meets the Indian Ocean; confronting the challenges of survival in the region; Lizzie dives with tiger sharks, manta rays and nomadic turtles.

Head into surgery with Mara the koala, who needs a life-saving tooth operation; assess an injured sugar glider with vet Tim; rescue officer Elise pulls a flying fox out of a gutter; see nurse Bree's clutch of python eggs hatch.

Mafia Island, located just off the Tanzanian coastline, is home to diverse marine and terrestrial ecosystems with miles of white beach and clear waters.

Head into surgery with Mara the koala, who needs a life-saving tooth operation; assess an injured sugar glider with vet Tim; rescue officer Elise pulls a flying fox out of a gutter; see nurse Bree's clutch of python eggs hatch.

Mafia Island, located just off the Tanzanian coastline, is home to diverse marine and terrestrial ecosystems with miles of white beach and clear waters.

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

Head into surgery with Mara the koala, who needs a life-saving tooth operation; assess an injured sugar glider with vet Tim; rescue officer Elise pulls a flying fox out of a gutter; see nurse Bree's clutch of python eggs hatch.

Mafia Island, located just off the Tanzanian coastline, is home to diverse marine and terrestrial ecosystems with miles of white beach and clear waters.

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

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.

Learning the secret of rehabilitating seals from experts at Vancouver Aquarium; search and rescue is launched.

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

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.

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

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

Gordon Buchanan meets the animals who live in nature's winter wonderlands.

Delve into the adventures of first-time stoat mum Bandita as she raises her kits in a unique weasel wonderland, with over 50 hidden cameras; cameras capture a half-ounce orphaned least weasel called Twiz embark on her journey back to the wild.

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

It really is a big bad world out there; so what happens if you are the little guy.

Head into surgery with Mara the koala, who needs a life-saving tooth operation; assess an injured sugar glider with vet Tim; rescue officer Elise pulls a flying fox out of a gutter; see nurse Bree's clutch of python eggs hatch.

Mafia Island, located just off the Tanzanian coastline, is home to diverse marine and terrestrial ecosystems with miles of white beach and clear waters.

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

Meeting a lovey-dovey penguin, a flamingo makeup artist and a badger making great escapes.

Attending a crabby shell swap, meeting a chimp's pet and sizing up an otter kidnapper.

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

Meeting a lovey-dovey penguin, a flamingo makeup artist and a badger making great escapes.

Attending a crabby shell swap, meeting a chimp's pet and sizing up an otter kidnapper.

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

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

Meeting a lovey-dovey penguin, a flamingo makeup artist and a badger making great escapes.

Attending a crabby shell swap, meeting a chimp's pet and sizing up an otter kidnapper.

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

A gorilla wrestling match, pushy moose antlers, long pelican bills that snap at any enemy within range, and a megashark's stereo sniffer.

Sea lions throw their weight around to win a mate, Cape buffalo deliver knockout punches, Canada geese hit hard with their wings, and lionesses rule the Savanna with an iron paw.

Hope recruits an unlikely wildlife rescuer.

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

A gorilla wrestling match, pushy moose antlers, long pelican bills that snap at any enemy within range, and a megashark's stereo sniffer.

Sea lions throw their weight around to win a mate, Cape buffalo deliver knockout punches, Canada geese hit hard with their wings, and lionesses rule the Savanna with an iron paw.

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

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

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.

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.

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.

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.

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

Meeting a lovey-dovey penguin, a flamingo makeup artist and a badger making great escapes.

Attending a crabby shell swap, meeting a chimp's pet and sizing up an otter kidnapper.

Summer in Yellowstone brings about new challenges; as food becomes scarce, wolves have a surprising strategy to keep their pups fed.

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.

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.

Summer in Yellowstone brings about new challenges; as food becomes scarce, wolves have a surprising strategy to keep their pups fed.

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.

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.

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

Summer in Yellowstone brings about new challenges; as food becomes scarce, wolves have a surprising strategy to keep their pups fed.

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.

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.

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.

Warthogs' lumpy armor, giant African bullfrogs' jumping and biting skills, wild turkeys' sharp beaks and razorlike spurs, and Nile crocodiles' powerful jaws.

A glacial stroll alongside a Galápagos tortoise; dancing with venomous European adders; a battle between Lacerta lizards; leopard seals' stealth attacks.

Allison and Barry try to shampoo a porcupine; a returning patient is released.

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.

Warthogs' lumpy armor, giant African bullfrogs' jumping and biting skills, wild turkeys' sharp beaks and razorlike spurs, and Nile crocodiles' powerful jaws.

A glacial stroll alongside a Galápagos tortoise; dancing with venomous European adders; a battle between Lacerta lizards; leopard seals' stealth attacks.

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

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.

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.

Summer in Yellowstone brings about new challenges; as food becomes scarce, wolves have a surprising strategy to keep their pups fed.

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.

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.