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

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

Following a pack of wolves across the wilds of the Iberian Peninsula; gaining a new understanding of their athleticism; tracking their progress on long-distance hunts; observing sprinting speed and their hunting tactics.

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

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

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.

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

Experience the North Atlantic's intense, brief summer with its animal residents; follow Arctic fox cubs learning to hunt for survival, an otter pup going solo for the first time, a mate-seeking puffin, and tiny reindeer taking their first steps.

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

The orphaned orangutans attempt to make friends, which is a vital step in rehabilitation.

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

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

The Northern Lights tells the story of the makeup of the planet, the sun and possibly life on other planets.

Using computer simulations, it is possible to fly over other worlds and see how galaxies interact.

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

Lunar and solar eclipses.

Animals have evolved different chemical weapons, from paralyzing venoms to necrotic toxins.

Animals that have evolved unusual abilities.

Some survival adaptations make creatures ugly.

The survival adaptations of creepy crawlers.

Penguin populations of Australia.

A look into the lives of emus.

A look at various airborne hunters.

An in-depth look at the elaborate and flamboyant mating rituals of various birds, including the prehistoric-looking cassowary and the male Victoria's riflebird.

Lady Elliot Island is the southern-most of the Great Barrier Reef.

Many iconic mainland fauna also live on Kangaroo Island.

Christmas Island is home to plants and creatures found nowhere else in the world.

Fraser Island is the largest sand island on Earth and home to many creatures.

Exploring the shores of the Northern Territory and the abundant waters of the Great Barrier Reef; Lizzie faces flooded roads, hungry saltwater crocs, and killer jellyfish as she investigates why many deadly creatures make remote areas their home.

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.

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

Discover the stories of six epic river journeys via the fascinating characters who live and work on and around the water.

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.

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

The orphaned orangutans attempt to make friends, which is a vital step in rehabilitation.

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

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

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

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

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.

For more than 25 years, the shuttle was our ticket to space and our laboratory in orbit.

Exploring the Milky Way from the mythology of ancient sky watchers to how scientists are mapping it from the inside out.

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

Some of the largest and unusual insects.

Interesting types of camouflage and coloration in animals.

Animals - and a plant - that use stench to survive.

Bizarre birds have various adaptations.

Geladas are found among the peaks and plateaus of Ethiopia's Simien Mountains.

Primates, like lemurs and baboons, display adaptability and resilience in their day-to-day lives on their quest for food and shelter.

The baboon has adapted to become one of Africa's most successful and dominant primates.

Red Colobus Monkeys on the island of Zanzibar.

Aliwal and Sodwana, the Dune Kingdoms.

Cape fur seals breed on Africa's west coast.

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

The species that call Lake Malawi home have evolved.

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.

Exploring the bizarre mating rituals of the ocean's most peculiar creatures; learning how bloody battles for mates, gender bending, and super-size litters of babies might secure a next generation for these animals.

The Oceanic White-tip shark has been called the most dangerous of all sharks; in two disasters during WWII 1,000 sailors perished in its jaws.

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

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.

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

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

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

Animals living in the harsh conditions of the mountain peaks.

An old volunteer returns; an endangered orphan is rescued; a miracle on the half shell.

Marine protected areas in Florida.

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

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

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

Winter is the ultimate challenge. As temperatures plunge across much of America, some animals escape to milder climes of the South, while others stay put and tough out the brutal cold and blizzards that blanket the North.

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

Travel around the globe to witness the atmospheric shifts that take place in March, from the wave of cherry blossoms that unfold across Japan to the final raft of green sea turtles that arrive on the Great Barrier Reef islands to lay eggs.

May brings violent tornados to North America and the life-giving monsoon to India; the dry season ends in southern Africa, claiming victims among elephants.

In July, Arctic ice sheets crash into the sea while an arctic fox hunts among the rocks. In Africa, herds wildebeest cross the croc-infested Mara river.

In September, seasonal swings activate change across the natural world.

Coming full circle on this wild year on Earth.

Stories of how animals react to Earth's extremes, from humpback whales to tiny butterflies and savanna chimpanzees.

From the Galapagos Islands to the edge of Antarctica, island wildlife reveal insights into the rapidly changing planet.

Animals go to extraordinary lengths to survive in the hottest and driest extremes, from the Sahara Desert to Australia.

Polar bears in the Arctic, penguins in Antarctica and other animals on icy islands can reveal changes taking place at the planet's frozen extremes.

Scientists take a look at animal species with the power to transform and restore grasslands.

Wildlife and the environment.

Marine protected areas in Florida.

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 waterways of the Rocky Mountains are home to many creatures.

Wildlife in the forest depends on a delicate balance of growth and destruction.

Many species survive by living in groups.

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

A bald eagle needs Hope's help; a small but lethal patient keep the entire staff on their toes.

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

Get to know Winston, a tiny abandoned cub who imprints on Judy as she nurses him 24-7.

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

Trekking across Africa for a peek at the colorful, quirky survival strategies of its animals; animals from flamboyant flamingos to vanishing lizards, find food, elude predators and find mates against all odds.

Bees are one of the most important species on the planet. A look at the trials and tribulations of two particular honeybees over two years from birth to death.

Discover how weirdness is baked into some animals' DNA from birth; check out the bowerbird's mate-attracting dance moves, the Christmas Island crab's traffic-dodging prowess and the sockeye salmon's uphill swimming skills!

A look at the supercharged abilities that give some animals an edge in life; discovering fireflies' flirty flashes, the tarsier's incredible night vision, the mantis shrimp' knockout punch and the saltwater croc's prey-detecting pressure sensors.

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

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

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.

Showcases how bears across the world have overcome the challenges of life, from finding food and raising cubs, to confronting rivals and habitat loss, all thanks to brains, brawn and amazing adaptability.

Every year, up to 80 polar bears gather on the frozen shores of Barter Island on the Arctic coast of Alaska.

Gordon Buchanan meets the animals that live in nature's winter wonderlands. He reveals their survival secrets, from the polar bear mother that gives her cubs the best possible start in life to the owl that finds food hidden beneath a blanket of snow.

Following a courageous ghost bear and her cubs on Canada's remote rain forest islands.

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

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 ancient Aztec legend of Popocatépetl.

In Indonesia, the air is 40 times above safe levels for humans and sulphuric acid vents from the ground in dense, yellow clouds; small volcanoes are reported to erupt every 15 minutes.

Japan is home to two of the top five most dangerous volcanoes on the planet.

For people who live on active volcanoes, life has an element of impermanence to it.

A hunt for a misunderstood coyote; the ravens have worn out their welcome and need a new home.

The team in 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 and a baby sea otter needs a risky but life-saving surgery.

An illustration of how the Arctic springs to life after nearly seven months in total darkness.

Devon Island in Nunavut is the largest uninhabited island in the world; the icy landscape is so barren that NASA uses it to simulate conditions on Mars.

Inside the Mackenzie Delta, a transition zone of the boreal forest to the frozen tundra.

The people of Nunavik prepare for the coming winter.

Ninginganiq is so dangerous that even seasoned sailors keep away.

The Hudson Bay lowlands are critical to life in North America.

The Yukon is one of earths last true wildernesses.

It's November at Cape Tatnam, and though winter is coming to the lower Western shore of Hudson Bay, the ice, which should be forming by now is nowhere to be seen.

Wildlife and the environment.

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

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.

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

Creatures travel thousands of miles to visit the reef and Pacific weather patterns are likely to further shape the terrain and wildlife.

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.

Learn the secrets of the most powerful, capable birds in the sky. Follow the dramatic story of a family of bald eagles, then join avian specialist Lloyd Buck as he puts his trained golden eagle to the test in a series of remarkable experiments.

The team in 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 and a baby sea otter needs a risky but life-saving surgery.

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.

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

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

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

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

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

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.

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.

Penguins live on a tiny, urban cape in South Africa.

During the dry season, the quest for water governs the lives of the animals in South Africa.

The Blue Lagoon is an extraordinary cove on South Africa's west coast.

The vast flood plains of the Chobe river.

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

The creatures of the wetlands.

Bone up on outdoor skills as Winston and the X girls move into their new fresh-air enclosure; witness Yasmine and Yara's kindergarten power struggle.

Navigate rain, new climbing structures, and a first meeting of the summer cubs.

A look at the extraordinary wildlife, landscapes and people of the Amazon, the world's greatest river; from boiling streams and transparent lagoons, to pink river dolphins and riotous river carnivals, its great size hides spectacular secrets.

A look at the astonishing wildlife, landscapes and people of the Nile, the world's longest river; from elephants and leopards, to extreme kayakers and ancient wonders, its great length is a lifeline for astonishing wildlife and cultures.

The Mississippi, from frozen waterfalls to time-traveling barges, from busy beavers to mysterious swamps, connects a continent like no other river. At the end of its 3,500-mile journey, it creates one of the biggest river deltas on the planet.

A closer look at the agility, intelligence and imagination of squirrels, a commonly unnoticed animal found in many American backyards.

Wildlife and the environment.

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.

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.

Gros Morne National Park is the result of continental collision.

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

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

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

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

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

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.

The interior of Brazil has ecosystems as different as dry forest and flood plains mix; this combination, which includes rivers, waterfalls and mountains, is home to a diverse and extremely rich fauna.

The Amazon River and its tributaries irrigate an ancient jungle full of life; the planet's largest eagle, the monkey-hunting harpy; tens of thousands of insects; several hundred kinds of fish.

An enormous territory of endless plains that changes its appearance twice a year, some times appearing flooded, other times looking nearly desiccated; a place of highly contrasting landscapes; the capybara.

A wild, jungle world lives on the shores of the Caribbean Sea; within the various channels of the tropical rivers, alligators and crocodiles swim and the fearsome jaguar searches for turtles on the region's virgin beaches.

As its name suggests, storms dominate the rainforest, with rain falling more than three hundred days a year; hundreds of species live in each layer of this jungle.

The lowest-lying ranges in the Andes have their own unique ecosystems, sheltered by the great mountains above, but still at the mercy of the sun and the Pacific breezes.

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

Introducing passionate animal lovers to the orphaned cubs at Black Bear Rescue Manitoba, offering a unique opportunity to follow adorable orphaned black bear cubs, from the moment they're rescued to the day they're released into the wild.

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.

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.

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

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.

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.

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.

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

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.

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.

Never seen before footage of Hope's greatest stories.

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

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

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

Hippos, elephants, lions and buffalo are drawn to the Zambezi's wild waters, which grow from a tiny trickle in Zambia to the thundering Victoria Falls.

The Danube River, which stretches from the Alps to the Black Sea, supports a surprising range of wildlife and is coping with years of human impact. (2 of 3).

The Yukon River boasts one of the longest salmon runs in the world; from musk ox to ice bears, there is a rich variety of life that call this frozen river home.

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

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

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

Winter is the ultimate challenge. As temperatures plunge across much of America, some animals escape to milder climes of the South, while others stay put and tough out the brutal cold and blizzards that blanket the North.

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

In the Arizona desert, a new honey ant queen attempts to build and defend her empire; she uses murder, cannibalism and genocide in her quest for domination.

Discover how weirdness is baked into some animals' DNA from birth; check out the bowerbird's mate-attracting dance moves, the Christmas Island crab's traffic-dodging prowess and the sockeye salmon's uphill swimming skills!

A look at the supercharged abilities that give some animals an edge in life; discovering fireflies' flirty flashes, the tarsier's incredible night vision, the mantis shrimp' knockout punch and the saltwater croc's prey-detecting pressure sensors.

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

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

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.

Animals living in the harsh conditions of the mountain peaks.

Chatty capuchin monkeys; Eurasian river otters' chilling screams; fruit bats' loud complaints; orcas' human-scale speech systems.

The Grasslands National Park protects the North American mixed grass prairie.

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

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

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

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

Hope recruits an unlikely wildlife rescuer.

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

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.

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

Creatures travel thousands of miles to visit the reef and Pacific weather patterns are likely to further shape the terrain and wildlife.

Investigating the different reasons that lead animals to face tough disputes.

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.

The most elemental and pure survival is based on eating; if an animal is not healthy, strong, and agile, they cannot compete to mate, defend their family from any threat, nor will they be able to achieve good status in their clan.

The love rivalry shakes every fiber of the body as hormones invade the blood, and some of the most overwhelming spectacles on the planet are produced; the language of love and the fight for reproduction stimulate the most diverse behaviors.

Territory is home, and the place where animals rest, find food or have their children; many animals mark, protect and defend their small nations against the invasion of strangers because their survival depends on it.

Exploring the many species that live in complex and hierarchical societies.

Get to know Winston, a tiny abandoned cub who imprints on Judy as she nurses him 24-7.

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

Bone up on outdoor skills as Winston and the X girls move into their new fresh-air enclosure; witness Yasmine and Yara's kindergarten power struggle.

Navigate rain, new climbing structures, and a first meeting of the summer cubs.

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

Introducing passionate animal lovers to the orphaned cubs at Black Bear Rescue Manitoba, offering a unique opportunity to follow adorable orphaned black bear cubs, from the moment they're rescued to the day they're released into the wild.

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

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

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

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.

"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.

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

Marine protected areas in Florida.

Hope and Allison look to gain more experience with pelicans by heading to southern California.

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.

The Bruce Peninsula is the largest natural landscape remaining in Southern Ontario.

The Pacific Rim National Park Reserve is one of Canada's most beautiful and powerful parks.

Hope and Allison look to gain more experience with pelicans by heading to southern California.

The Everglades during the winter season.

Waters flood the prairies, mangroves and marshes.

The team in 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 and 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 centre. Find out how the vet aids an aging fruit bat and a community rescues a one-eyed seal pup.

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

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.

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.