The rehab is flooded with orphaned seals, with some frozen solid in ice.

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

In a South African sanctuary, Liz meets a nine-year-old lion called Ricci whose teeth are in such rough shape he can't eat; specially trained vets use unique tools and slightly more anaesthetic than estimated on the wakeful patient.

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

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 is taking on more animals and more responsibilities, but there are concerns about Hope's own health.

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

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.

Navigate a mangrove forest in Borneo with the saltwater crocodile, which is perfectly suited to life among the watery roots; discover how this reptile uses the environment to regulate its temperature and why its patience makes it a good hunter.

A feeding frenzy for hungry predators as the Great Migration arrives.

How snakes have adapted to become one of evolution's most amazing success stories.

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.

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

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

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

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

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

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.

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.

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.

Scientists from around the world reveal what makes sharks the ocean's ultimate predators.

Sharks are the ocean's most resilient hunters; discovering just how far they are willing to go.

Sharks have adapted to thrive in extreme places.

The ultimate battle for dominance as scientists try to pick out the alpha male in a pack of 100-plus great white sharks off the New Zealand coast.

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

The ultimate battle for dominance as scientists try to pick out the alpha male in a pack of 100-plus great white sharks off the New Zealand coast.

Returning to South Luangwa to see the new pups born to the mighty Manzi and the tiny-but-fearless Kakumbi packs; yearling Snowy faces a hungry hyena before a lion pride scatters Manzi mum Weka's pups and leaves her frantically searching for them.

There's a lion-hyena showdown with Julz as he hunts for the elusive Manzi pack, who are missing four of their precious pups; Henry from the Zambian Carnivore Programme is on a house call to the Kakumbi den, where another pup has gone AWOL.

Old friends and a breakaway Manzi trio; Kakumbi make a kill.

Julz and Henry from the ZCP track the Kakumbi pups, who face off with a stubborn, razor-tusked warthog; Thandie Mweetwa, ZCP's lion specialist, counts the prides that are pushing the Manzi out of their territory.

Meandering through the black waters of a primordial river immortalized in a folk song.

This oldest National Park in the Canadian Maritimes is home to the highest density of moose in the world.

The Torngat Mountains National Park was set up in part to return the aboriginal people to their birthright.

An old patient gets a second chance; a pregnant porcupine; Hope has surgery.

Meandering through the black waters of a primordial river immortalized in a folk song.

This oldest National Park in the Canadian Maritimes is home to the highest density of moose in the world.

The Torngat Mountains National Park was set up in part to return the aboriginal people to their birthright.

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

Meandering through the black waters of a primordial river immortalized in a folk song.

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.

Five desert lions come of age in the African Namib.

The Judean desert is located next to Jerusalem and the Dead Sea.

Near the Snowy Mountains of southeast Australia is Wombat Wood, a wooded area dotted with the burrows of wombats.

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.

Returning to South Luangwa to see the new pups born to the mighty Manzi and the tiny-but-fearless Kakumbi packs; yearling Snowy faces a hungry hyena before a lion pride scatters Manzi mum Weka's pups and leaves her frantically searching for them.

There's a lion-hyena showdown with Julz as he hunts for the elusive Manzi pack, who are missing four of their precious pups; Henry from the Zambian Carnivore Programme is on a house call to the Kakumbi den, where another pup has gone AWOL.

Old friends and a breakaway Manzi trio; Kakumbi make a kill.

Julz and Henry from the ZCP track the Kakumbi pups, who face off with a stubborn, razor-tusked warthog; Thandie Mweetwa, ZCP's lion specialist, counts the prides that are pushing the Manzi out of their territory.

Lizzie swims through coral reefs, digs for ancient fossils and treks through jungles on tropical shores; prowl with jaguars that stalk a Costa Rican beach and meet some big sharks.

In Namibia, Gordon joins a cheetah conservationist who wants to see if three orphaned cheetahs can learn to hunt; in Australia, the team put cameras on fur seals; in South Africa, the team deploy the first ever cameras on wild baboons.

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

Lizzie swims through coral reefs, digs for ancient fossils and treks through jungles on tropical shores; prowl with jaguars that stalk a Costa Rican beach and meet some big sharks.

In Namibia, Gordon joins a cheetah conservationist who wants to see if three orphaned cheetahs can learn to hunt; in Australia, the team put cameras on fur seals; in South Africa, the team deploy the first ever cameras on wild baboons.

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

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

Lizzie swims through coral reefs, digs for ancient fossils and treks through jungles on tropical shores; prowl with jaguars that stalk a Costa Rican beach and meet some big sharks.

In Namibia, Gordon joins a cheetah conservationist who wants to see if three orphaned cheetahs can learn to hunt; in Australia, the team put cameras on fur seals; in South Africa, the team deploy the first ever cameras on wild baboons.

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

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

Riding Mountain National Park in Manitoba.

Fundy National Park in southern New Brunswick.

Hope visits two long-term patients; tough choices; a unique creature joins the rehab.

Gros Morne National Park is the result of continental collision.

Riding Mountain National Park in Manitoba.

Fundy National Park in southern New Brunswick.

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

Gros Morne National Park is the result of continental collision.

A completely new way of looking at the animal kingdom with adventurer, survivalist, and zoology nut Max Djenohan. Max is on a mission. To unlock and mimic the survival skills of some of the most charismatic animals on Earth.

A completely new way of looking at the animal kingdom with adventurer, survivalist, and zoology nut Max Djenohan. Max is on a mission. To unlock and mimic the survival skills of some of the most charismatic animals on Earth.

Zambia's Luangwa River hippos are living the easy life, or so it seems. They are one of the heaviest creatures on Earth, and life fluctuates between the serenity of sunbathing and the terrible brutality of dominance and aggression.

A feeding frenzy for hungry predators as the Great Migration arrives.

Lizzie swims through coral reefs, digs for ancient fossils and treks through jungles on tropical shores; prowl with jaguars that stalk a Costa Rican beach and meet some big sharks.

In Namibia, Gordon joins a cheetah conservationist who wants to see if three orphaned cheetahs can learn to hunt; in Australia, the team put cameras on fur seals; in South Africa, the team deploy the first ever cameras on wild baboons.

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

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.

Exploring the softer side of Tasmanian devils; meeting a pioneering sea turtle and enjoying family dinner with Buttons, the deer; playing football with a bull.

Flapping around with Banksi the fruit bat and his human surrogate mom; eyeing a mischievous emu; celebrating a pig's rescue-versary; touring manatee heaven; learning to speak baboon with Dingani.

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.

Exploring the softer side of Tasmanian devils; meeting a pioneering sea turtle and enjoying family dinner with Buttons, the deer; playing football with a bull.

Flapping around with Banksi the fruit bat and his human surrogate mom; eyeing a mischievous emu; celebrating a pig's rescue-versary; touring manatee heaven; learning to speak baboon with Dingani.

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

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.

Exploring the softer side of Tasmanian devils; meeting a pioneering sea turtle and enjoying family dinner with Buttons, the deer; playing football with a bull.

Flapping around with Banksi the fruit bat and his human surrogate mom; eyeing a mischievous emu; celebrating a pig's rescue-versary; touring manatee heaven; learning to speak baboon with Dingani.

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

Terra Nova National Park on the Newfoundland coast is a beautiful enigma with a rugged forest.

Quttinirpaaq National Park is affected by climate change.

The flood of fawns arrives; a pigeon gets some much needed relief; an animal is stuck in a car.

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

Terra Nova National Park on the Newfoundland coast is a beautiful enigma with a rugged forest.

Quttinirpaaq National Park is affected by climate change.

At a home for rescued baby chimps in Liberia, Jim and Jenny Desmond teach the orphans the skills they would have learned from their mothers in the wild; a new orphan named Miracle is rescued from her life on a chain.

At Liberia's only home for rescued chimpanzees, there are more new arrivals; Jimmy and Jenny Desmond and their team now have 28 chimps to look after, including an 8-week-old baby called Gaia.

Jimmy and Jenny Desmond and their team are at breaking point, with 38 chimps to look after; losing one of them to illness leaves the team more determined than ever to build them all a new sanctuary where they can live like wild chimps.

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.

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

Two black rhinos in Zambia are at the core of a relocation mission that's part of a grand plan to save the species.

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

Rescuing baboons and a wounded pangolin.

An infection slows a duiker's release.

Seeing the release of pythons and monkeys.

Dr. Amanda removes a sable antelope's tracking collar and the animal-care team help a flea-riddled baby vervet monkey find a new mom, free two orphaned serval cats, and follow 20 yellow baboons into their new enclosure.

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

Professor Ben Garrod explores the evolution of the body's largest organ, skin.

Learn how South America's rich diversity of weather fuels an even richer diversity of life; examine the Amazon rainforest's oxygen-breathing trees, follow the arc of a vast cloud river and meet flamingos that thrive in the sun's scorching UV rays.

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

Visitors from around the world come to La Maurice National Park each fall when the leaves change.

The Gulf Island National Park sits between the development of Vancouver Island and British Columbia.

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

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

Visitors from around the world come to La Maurice National Park each fall when the leaves change.

The Gulf Island National Park sits between the development of Vancouver Island and British Columbia.

In a South African sanctuary, Liz meets a nine-year-old lion called Ricci whose teeth are in such rough shape he can't eat; specially trained vets use unique tools and slightly more anaesthetic than estimated on the wakeful patient.

In Sierra Leone, a young chimpanzee deals with a potentially cancerous growth on her abdomen; wildlife vets deliver a diagnosis then get a fright mid-surgery.

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.

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

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.

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.

Rescue officers use a technique called flagging to nab a koala with dangerously inflamed eyes; vet Tim soothes burned possum feet; vet Karina examines a half-drowned platypus before referring him to a specialist.

Juggle the demands of caring for sick koala joeys with vet Claire; see what it takes to save a squirrel glider caught in barbed wire; take care of an exhausted owl; get a big surprise when vet Tim X-rays a turtle that was struck by a car.

Follow vet Tim as he races to save rescued koala Ashley; then meet a flying fox with an extra digit who needs some TLC from vet Martine; calculate the odds for a run-over kangaroo joey with vet Emily; then celebrate the release of 50 lorikeets.

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

Taking a journey through the eyes of catfish, ocelots, and other native creatures, celebrating the Lone Star State's landscapes and wildlife, and looking at how crucial conservation efforts can save Texas' unique habitats.

The rehab is flooded with orphaned seals, with some frozen solid in ice.

Hope puts everything on the line to save an orphaned black bear cub; two bobcats are ready for release, but they won't go easy.

When a great horned owl arrives covered in oil, Doctor Sherri must put it through a terrifying, life-saving procedure; boxes of young foxes need help and attention.

Hope's team struggles to help two rescued harp seals learn the natural behaviors they will need to survive in the wild.

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.

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

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

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

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

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.

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

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

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.

Giles cares for a sun bear cub while building a rescue center in Laos.

Giles helps two moon bear cubs and is shocked with news at the sanctuary.

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

Big changes are afoot for some of the pupils at Orangutan Jungle School, where orphaned orangutans learn the forest skills they need to survive in the wild; four new arrivals join the nursery classes and some familiar faces move up a grade.

Recent nursery graduates Jelapat, Talaken, Bawan and Rona join their classmates at their new classroom; Dilla unexpectedly gives birth at midnight, but the delivery does not go smoothly.

Beni and Lala are confined to the clinic following an accident; bullied Kesi causes concern for the team; Clara and her daughter, Clarita, are chosen for release back into the wild.

Beni and Lala are going stir-crazy in the sick bay, but they must recover before returning to the rough and tumble of class; at forest school, a termite-foraging lesson inspires class clown Valentino to make a finger-licking discovery.

Three-year-old Wine ditches lessons to make a remarkable new friend, as she bonds with a young macaque; two refugees from a Thai circus, young mother Sampit and her son Sawadee, get a second chance at living semi-wild on a pre- release island.

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

At a home for rescued baby chimps in Liberia, Jim and Jenny Desmond teach the orphans the skills they would have learned from their mothers in the wild; a new orphan named Miracle is rescued from her life on a chain.

At Liberia's only home for rescued chimpanzees, there are more new arrivals; Jimmy and Jenny Desmond and their team now have 28 chimps to look after, including an 8-week-old baby called Gaia.

Jimmy and Jenny Desmond and their team are at breaking point, with 38 chimps to look after; losing one of them to illness leaves the team more determined than ever to build them all a new sanctuary where they can live like wild chimps.

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

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.

A high-tech autopsy on a Nile crocodile unlocks secrets behind its hunting prowess.

A feeding frenzy for hungry predators as the Great Migration arrives.

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.

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

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.

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

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

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.

When a tiny piece of trash ruins a raccoon's life, Doctor Jessica cuts it free, but Hope faces tough decisions about its future; a volunteer plunges in to save an injured goose.

When a tiny fawn gets hit by a car, Doctor Jessica must splint its broken leg or it will never return to the wild; a mother porcupine arrives with baby in tow and both need life-saving attention for a parasitic infection.

Just as Hope is scrambling to get ready for her busiest day of the year, the government decides to seize the bear cub Hope's worked so hard to save.

When a Category 2 hurricane slams straight into the rehab, Hope and her team struggle to protect their patients in the middle of the raging storm.

A photographer snaps into action to save a turkey vulture's life after it gets trapped under a seal carcass.

When a worldwide pandemic cripples the rehab, wildlife emergencies keep coming in: a bobcat that's been shot, and a massive adult seal; Hope's down to a skeleton crew as critical team members go into quarantine.

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

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

Taking a journey through the eyes of catfish, ocelots, and other native creatures, celebrating the Lone Star State's landscapes and wildlife, and looking at how crucial conservation efforts can save Texas' unique habitats.

In a South African sanctuary, Liz meets a nine-year-old lion called Ricci whose teeth are in such rough shape he can't eat; specially trained vets use unique tools and slightly more anaesthetic than estimated on the wakeful patient.

In Sierra Leone, a young chimpanzee deals with a potentially cancerous growth on her abdomen; wildlife vets deliver a diagnosis then get a fright mid-surgery.

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.

Tending to a spring rush and a rude roo.

Aiding a pelican in peril and a mad koala.

Soothing a bitten koala and itchy possums.

"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.

Hope puts everything on the line to save an orphaned black bear cub; two bobcats are ready for release, but they won't go easy.

Rescuing baboons and a wounded pangolin.

In Sierra Leone, a young chimpanzee deals with a potentially cancerous growth on her abdomen; wildlife vets deliver a diagnosis then get a fright mid-surgery.

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

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

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

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

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

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

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

Elephants in the Lilayi Elephant Nursery and Kafue National Park.

The secrets of Kinda baboons, a newly-identified species that's still little understood.

Madonna is the first Kinda baboon to be studied from birth to adulthood, and, now, she is looking for a mate.

A team of dedicated conservationists go to extraordinary lengths to keep the rare black rhino safe from poachers.

At a home for rescued baby chimps in Liberia, Jim and Jenny Desmond teach the orphans the skills they would have learned from their mothers in the wild; a new orphan named Miracle is rescued from her life on a chain.

At Liberia's only home for rescued chimpanzees, there are more new arrivals; Jimmy and Jenny Desmond and their team now have 28 chimps to look after, including an 8-week-old baby called Gaia.

Jimmy and Jenny Desmond and their team are at breaking point, with 38 chimps to look after; losing one of them to illness leaves the team more determined than ever to build them all a new sanctuary where they can live like wild chimps.

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.

Giles cares for a sun bear cub while building a rescue center in Laos.

Giles helps two moon bear cubs and is shocked with news at the sanctuary.

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

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.

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.

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.

Tangle with a leopard; exploring mealtime hierarchy and witnessing a sad vigil.

Grieving the lost Kakumbi pups; the Manzi pack repels big predators.

Patrick Aryee follows grizzly bears that are taking a risk by leaving their winter dens early; hungry wolves are struggling to bring down their elk prey in the unusually shallow snow.

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

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

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

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

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

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

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

Rescuing baboons and a wounded pangolin.

An infection slows a duiker's release.

Seeing the release of pythons and monkeys.

Dr. Amanda removes a sable antelope's tracking collar and the animal-care team help a flea-riddled baby vervet monkey find a new mom, free two orphaned serval cats, and follow 20 yellow baboons into their new enclosure.

The team faces a heartbreaking loss.

Waving goodbye to beloved Sheila the Croc.

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

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

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.

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.

Rescue officers use a technique called flagging to nab a koala with dangerously inflamed eyes; vet Tim soothes burned possum feet; vet Karina examines a half-drowned platypus before referring him to a specialist.

Juggle the demands of caring for sick koala joeys with vet Claire; see what it takes to save a squirrel glider caught in barbed wire; take care of an exhausted owl; get a big surprise when vet Tim X-rays a turtle that was struck by a car.

Follow vet Tim as he races to save rescued koala Ashley; then meet a flying fox with an extra digit who needs some TLC from vet Martine; calculate the odds for a run-over kangaroo joey with vet Emily; then celebrate the release of 50 lorikeets.

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.

Tag along with Lizzie on her most dangerous atlantic adventure yet; free diving with bull sharks; explore otherworldly gulf coast swamps filled with hungry alligators, crafty snapping turtles and tiny but mighty beach mice who strengthen sand dunes.

In the heart of the Atlantic, a team looks at devil rays, fish with "wings" nearly 13 feet across; in northeast Turkey, cameras are carried by brown bears and in southern France, on-board cameras look at guard dogs protecting sheep flocks.

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

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

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

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

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

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

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

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

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

Taking a journey through the eyes of catfish, ocelots, and other native creatures, celebrating the Lone Star State's landscapes and wildlife, and looking at how crucial conservation efforts can save Texas' unique habitats.

Tackling pet hoarding and a deadly snake.

Rounding up ducklings and helping a lost koala.

Bailing out koala joeys and a grounded owl.

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.