At Taronga Zoo Sydney, a major change is underway in the western lowland gorilla habitat. As the team works through the health checks, concerns grow around the wellbeing of Frala, the eldest female. Elsewhere, keepers focus on future-proofing other vulnerable species.

Hobo finds an undetonated World War II bomb.

Hobo saves animals from a forest fire and aids a poisoned child.

Cyril and his team embark on a mission to search for the venomous short-tailed river stingray in Argentina and help the locals develop an antitoxin.

Stranded on a deserted island off the west coast of Panama, Cyril and his team are in survival mode; Cyril came to catch a huge Dientón, a large predator with huge teeth, but things did not go according to plan.

Niall investigates gorillas in Uganda and joins a medical expedition to save them.

After weeks of training, keepers prepare an elephant for x-ray imaging.

A healthy bull's fancy turns towards a little cow courtship as Dr. Keri makes house calls to assess health and virility that are vital to life on the farm; Jenna has a close call with the most ornery bull in the bunch.

Unwanted stray dogs roam in packs and can be a dangerous threat; rescue groups bring dogs to Dr. Keri, in the city and on reserves, saving thousands of lives.

Expert analysis and experience combine to put Shane and Kate on the gold, while Nev takes Brent and Ethan to a secret spot in the Great Australian Desert; Alan and Salty risk getting stranded by the tide on isolated salt flats.

Jacqui and Andrew are threatened by deadly snakes and sharp rocks on their hunt for gold; Kat is in at the deep end trying to handle the big machines; Shane and Kate are on the gold, but will they have the equipment to extract it?

With a major storm on the horizon and the fish biting, Gloucester's fishermen have to brave the weather.

Cyril and his team embark on a mission to search for the venomous short-tailed river stingray in Argentina and help the locals develop an antitoxin.

Stranded on a deserted island off the west coast of Panama, Cyril and his team are in survival mode; Cyril came to catch a huge Dientón, a large predator with huge teeth, but things did not go according to plan.

Niall investigates gorillas in Uganda and joins a medical expedition to save them.

After weeks of training, keepers prepare an elephant for x-ray imaging.

A healthy bull's fancy turns towards a little cow courtship as Dr. Keri makes house calls to assess health and virility that are vital to life on the farm; Jenna has a close call with the most ornery bull in the bunch.

Unwanted stray dogs roam in packs and can be a dangerous threat; rescue groups bring dogs to Dr. Keri, in the city and on reserves, saving thousands of lives.

With a major storm on the horizon and the fish biting, Gloucester's fishermen have to brave the weather.

Expert analysis and experience combine to put Shane and Kate on the gold, while Nev takes Brent and Ethan to a secret spot in the Great Australian Desert; Alan and Salty risk getting stranded by the tide on isolated salt flats.

Jacqui and Andrew are threatened by deadly snakes and sharp rocks on their hunt for gold; Kat is in at the deep end trying to handle the big machines; Shane and Kate are on the gold, but will they have the equipment to extract it?

Cyril and his team embark on a mission to search for the venomous short-tailed river stingray in Argentina and help the locals develop an antitoxin.

Stranded on a deserted island off the west coast of Panama, Cyril and his team are in survival mode; Cyril came to catch a huge Dientón, a large predator with huge teeth, but things did not go according to plan.

Niall investigates gorillas in Uganda and joins a medical expedition to save them.

Hobo helps a man escape a town's vengeance only to risk capture when they stop to help an injured man.

Hobo unearths vital evidence proving the innocence of a man wrongfully accused of murder.

A healthy bull's fancy turns towards a little cow courtship as Dr. Keri makes house calls to assess health and virility that are vital to life on the farm; Jenna has a close call with the most ornery bull in the bunch.

Unwanted stray dogs roam in packs and can be a dangerous threat; rescue groups bring dogs to Dr. Keri, in the city and on reserves, saving thousands of lives.

A hunter insists he's searching for coyotes when he's caught using an unauthorized gun; officers track down a man who killed a deer first and bought his license later; hunters raise concern when they're too close to houses.

At Taronga Zoo Sydney, a major change is underway in the western lowland gorilla habitat. As the team works through the health checks, concerns grow around the wellbeing of Frala, the eldest female. Elsewhere, keepers focus on future-proofing other vulnerable species.

Hobo helps a man escape a town's vengeance only to risk capture when they stop to help an injured man.

Hobo unearths vital evidence proving the innocence of a man wrongfully accused of murder.

Andre and Michelle abandon the search for mackerel in favor of herring; Morris navigates blind in dangerous fishing grounds.

Skipper Paul Tiller and his crew fish for urchin; Morris Anstey continues a hot streak of fishing luck; Andre and Michelle Jesso still seek their first big catch.

Skipper Paul Tiller's crew find conditions increasingly difficult to dive for urchin; Skipper Morris Anstey races to catch as much herring as possible before the fish plant closes.

Vets rehab an injured barn owl; keepers welcome a new tree roo.

A look at the lives of Montana conservation officers who defend public lands, handle anti-poaching sting operations and more.

Alan and Salty head to wine country to chase a gold rush legend; a drought threatens to end the season for Shane and Kate; the Poseidon Crew use an over-sized metal detector to get some seriously oversized nuggets.

Jacqui and Andrew buy a quad bike to get to the site of an old gold rush; Shane and Kate are falling further behind with more equipment failures; the Brumbies are under mounting pressure until a bush fix almost turns fatal.

Capt. Dave Carraro resorts to espionage like tactics to find what he needs; Capt. Dave Marciano and Capt. Tyler McLaughlin form an unlikely alliance.

Andre and Michelle abandon the search for mackerel in favor of herring; Morris navigates blind in dangerous fishing grounds.

Skipper Paul Tiller and his crew fish for urchin; Morris Anstey continues a hot streak of fishing luck; Andre and Michelle Jesso still seek their first big catch.

Skipper Paul Tiller's crew find conditions increasingly difficult to dive for urchin; Skipper Morris Anstey races to catch as much herring as possible before the fish plant closes.

Vets rehab an injured barn owl; keepers welcome a new tree roo.

A look at the lives of Montana conservation officers who defend public lands, handle anti-poaching sting operations and more.

Capt. Dave Carraro resorts to espionage like tactics to find what he needs; Capt. Dave Marciano and Capt. Tyler McLaughlin form an unlikely alliance.

Alan and Salty head to wine country to chase a gold rush legend; a drought threatens to end the season for Shane and Kate; the Poseidon Crew use an over-sized metal detector to get some seriously oversized nuggets.

Jacqui and Andrew buy a quad bike to get to the site of an old gold rush; Shane and Kate are falling further behind with more equipment failures; the Brumbies are under mounting pressure until a bush fix almost turns fatal.

Andre and Michelle abandon the search for mackerel in favor of herring; Morris navigates blind in dangerous fishing grounds.

Skipper Paul Tiller and his crew fish for urchin; Morris Anstey continues a hot streak of fishing luck; Andre and Michelle Jesso still seek their first big catch.

Skipper Paul Tiller's crew find conditions increasingly difficult to dive for urchin; Skipper Morris Anstey races to catch as much herring as possible before the fish plant closes.

Hobo helps rescue a ballerina who wants to defect from her Iron Curtain captors.

Hobo hides two horses destined to be destroyed and uses them to save a busload of children during a violent storm.

A look at the lives of Montana conservation officers who defend public lands, handle anti-poaching sting operations and more.

After weeks of training, keepers prepare an elephant for x-ray imaging.

With a major storm on the horizon and the fish biting, Gloucester's fishermen have to brave the weather.

Hobo helps rescue a ballerina who wants to defect from her Iron Curtain captors.

Hobo hides two horses destined to be destroyed and uses them to save a busload of children during a violent storm.

The carvers create and race cars, while the Master Carve pairs them up in a team challenge; they must work together or face the axe.

As the challenges grow more difficult, the carvers test their resilience with a jam session, making musical instruments out of wood; the "Master Carve" leaves the competitors spinning as they create fantastical carousel animals ready to ride.

Two yearling bears appear too attached to the volunteers to be released to the wild; Angelika must condition them to fear people.

When thousands of people turn out to the shelter's annual Open House, Angelika balances public relations with caring for a seriously injured fawn.

Keepers conduct a pouch check to find out if Polly the bilby is expecting.

A rotten bridge forces a logging crew to move to another section, but the road is still under construction; other loggers are on track to finish loading by the end of the day, but an operator error threatens to shut them down.

Dangerous storm damage at Rods Camp requires an urgent recovery operation; a hazardous build up of dirt in the Tunnel Rats mine brings them to a halt.

The Blacklighters realize a long-held dream with the purchase of an excavator, while the Young Guns struggle for air trying to open a ventilation shaft 14 meters underground.

Having caught only one fish by the start of week five, Tyler, captain of the Pins Wheel goes to his lucky fishing spot to discover a rival captain is already there.

The carvers create and race cars, while the Master Carve pairs them up in a team challenge; they must work together or face the axe.

As the challenges grow more difficult, the carvers test their resilience with a jam session, making musical instruments out of wood; the "Master Carve" leaves the competitors spinning as they create fantastical carousel animals ready to ride.

Two yearling bears appear too attached to the volunteers to be released to the wild; Angelika must condition them to fear people.

When thousands of people turn out to the shelter's annual Open House, Angelika balances public relations with caring for a seriously injured fawn.

Keepers conduct a pouch check to find out if Polly the bilby is expecting.

A rotten bridge forces a logging crew to move to another section, but the road is still under construction; other loggers are on track to finish loading by the end of the day, but an operator error threatens to shut them down.

Having caught only one fish by the start of week five, Tyler, captain of the Pins Wheel goes to his lucky fishing spot to discover a rival captain is already there.

Dangerous storm damage at Rods Camp requires an urgent recovery operation; a hazardous build up of dirt in the Tunnel Rats mine brings them to a halt.

The Blacklighters realize a long-held dream with the purchase of an excavator, while the Young Guns struggle for air trying to open a ventilation shaft 14 meters underground.

The carvers create and race cars, while the Master Carve pairs them up in a team challenge; they must work together or face the axe.

As the challenges grow more difficult, the carvers test their resilience with a jam session, making musical instruments out of wood; the "Master Carve" leaves the competitors spinning as they create fantastical carousel animals ready to ride.

Two yearling bears appear too attached to the volunteers to be released to the wild; Angelika must condition them to fear people.

When thousands of people turn out to the shelter's annual Open House, Angelika balances public relations with caring for a seriously injured fawn.

Hobo gathers evidence against a hit-and-run driver and forces him to make a confession.

Terrorists kidnap the son of a government official in hopes of having their demands met.

A rotten bridge forces a logging crew to move to another section, but the road is still under construction; other loggers are on track to finish loading by the end of the day, but an operator error threatens to shut them down.

Vets rehab an injured barn owl; keepers welcome a new tree roo.

Capt. Dave Carraro resorts to espionage like tactics to find what he needs; Capt. Dave Marciano and Capt. Tyler McLaughlin form an unlikely alliance.

Hobo gathers evidence against a hit-and-run driver and forces him to make a confession.

Terrorists kidnap the son of a government official in hopes of having their demands met.

Phoebe arrives with two broken legs; Ilana tries working with a horse who is afraid of people.

A dog with two paralyzed back legs returns; the team gets ready for the garden-themed festival.

Rob assesses a dog at risk of being put down; Tony and Moby gain some interest from families.

Rob starts training 18 pit bull mixes in Florida; Danielle is worried about the health of a draft horse.

Rob and Danielle travel to Israel to rescue dogs; a family meets a dog that they've been longing for; a visit to some pigs on a farm.

A dog with amputated front paws arrives; Ilana trims an energetic foal's hooves; Danielle gets a special visit.

An uninvited resident, the brush turkey, wreaks havoc at Taronga Zoo.

Niall travels through Louisiana swamps to pursue stories of monster hogs, but also to discover just how big the feral pig problem really is.

The Bishop has his faith tested by a new partner, a freak storm threatens a truckload of pay dirt for the Cheals, and new team the Geran Gang race a late season start.

The Blacklighters achieve a long-held dream with the purchase of an excavator, and the Bishop resorts to explosives to break an opal drought.

It's a close battle for the title of top-earning boat as Gloucester's bluefin tuna fleet charges into the heart of the fishing season.

Phoebe arrives with two broken legs; Ilana tries working with a horse who is afraid of people.

A dog with two paralyzed back legs returns; the team gets ready for the garden-themed festival.

Rob assesses a dog at risk of being put down; Tony and Moby gain some interest from families.

Rob starts training 18 pit bull mixes in Florida; Danielle is worried about the health of a draft horse.

Rob and Danielle travel to Israel to rescue dogs; a family meets a dog that they've been longing for; a visit to some pigs on a farm.

A dog with amputated front paws arrives; Ilana trims an energetic foal's hooves; Danielle gets a special visit.

An uninvited resident, the brush turkey, wreaks havoc at Taronga Zoo.

Niall travels through Louisiana swamps to pursue stories of monster hogs, but also to discover just how big the feral pig problem really is.

It's a close battle for the title of top-earning boat as Gloucester's bluefin tuna fleet charges into the heart of the fishing season.

The Bishop has his faith tested by a new partner, a freak storm threatens a truckload of pay dirt for the Cheals, and new team the Geran Gang race a late season start.

The Blacklighters achieve a long-held dream with the purchase of an excavator, and the Bishop resorts to explosives to break an opal drought.

Phoebe arrives with two broken legs; Ilana tries working with a horse who is afraid of people.

A dog with two paralyzed back legs returns; the team gets ready for the garden-themed festival.

Rob assesses a dog at risk of being put down; Tony and Moby gain some interest from families.

Rob starts training 18 pit bull mixes in Florida; Danielle is worried about the health of a draft horse.

Rob and Danielle travel to Israel to rescue dogs; a family meets a dog that they've been longing for; a visit to some pigs on a farm.

A dog with amputated front paws arrives; Ilana trims an energetic foal's hooves; Danielle gets a special visit.

Hobo rescues an elderly man from a mine cave-in.

Hobo befriends a 3-year-old girl who has strayed from her parents' camper in a wilderness area.

Niall travels through Louisiana swamps to pursue stories of monster hogs, but also to discover just how big the feral pig problem really is.

Keepers conduct a pouch check to find out if Polly the bilby is expecting.

Having caught only one fish by the start of week five, Tyler, captain of the Pins Wheel goes to his lucky fishing spot to discover a rival captain is already there.

Hobo rescues an elderly man from a mine cave-in.

Hobo befriends a 3-year-old girl who has strayed from her parents' camper in a wilderness area.

Dr. Keri and her crew travel to a Sheltie breeder, where Breeze the dog faces a serious prognosis; Keri and her canines compete in national dog shows where all the top dogs want to be best in show.

Dr. Keri visits townie pets, farm animals and has a date with a donkey named Eeyore; Dr. Keri reflects on her love for her team, the people and pets whose lives she's changed, having a partner who loves and supports her.

A stray dog arrives at RAPS in rough shape and the team uncovers his surprising story; William, a street-wise cat, amazes Dr. Maldonado with his resilience; Odin, a German Eurasier, heads into surgery; Karen is handed a huge picking challenge.

A black cat with breathing problems gives the vets a run for their money; Bucky, a senior Labrador, takes a frightening turn during surgery; Lucy the Hedgehog surprises her owner with undetected health issues.

Two of Taronga's quokkas, known as the happiest animals in the world, have extra reason to smile now that staff have discovered that one of them is carrying a little one in her pouch.

Orangutan Malu destroys his playroom; an elderly horse must undergo a dangerous procedure; keepers must decide if it's time to say goodbye to one of the zoo's giraffes.

Storms hit the Gemfields and Max fights his way to the lease, but the floods may have destroyed his dam.

With water in the dam, Max and Glenn finally get a break, but their machines break down; Todd and Brianna face a phobia and a dangerous situation while the Mifsuds' season might end with a family feud.

Burdened by the responsibility of providing for their families and crew, the captains grow desperate to catch and tempers flare.

Dr. Keri and her crew travel to a Sheltie breeder, where Breeze the dog faces a serious prognosis; Keri and her canines compete in national dog shows where all the top dogs want to be best in show.

Dr. Keri visits townie pets, farm animals and has a date with a donkey named Eeyore; Dr. Keri reflects on her love for her team, the people and pets whose lives she's changed, having a partner who loves and supports her.

A stray dog arrives at RAPS in rough shape and the team uncovers his surprising story; William, a street-wise cat, amazes Dr. Maldonado with his resilience; Odin, a German Eurasier, heads into surgery; Karen is handed a huge picking challenge.

A black cat with breathing problems gives the vets a run for their money; Bucky, a senior Labrador, takes a frightening turn during surgery; Lucy the Hedgehog surprises her owner with undetected health issues.

Two of Taronga's quokkas, known as the happiest animals in the world, have extra reason to smile now that staff have discovered that one of them is carrying a little one in her pouch.

Orangutan Malu destroys his playroom; an elderly horse must undergo a dangerous procedure; keepers must decide if it's time to say goodbye to one of the zoo's giraffes.

Burdened by the responsibility of providing for their families and crew, the captains grow desperate to catch and tempers flare.

Storms hit the Gemfields and Max fights his way to the lease, but the floods may have destroyed his dam.

With water in the dam, Max and Glenn finally get a break, but their machines break down; Todd and Brianna face a phobia and a dangerous situation while the Mifsuds' season might end with a family feud.

Dr. Keri and her crew travel to a Sheltie breeder, where Breeze the dog faces a serious prognosis; Keri and her canines compete in national dog shows where all the top dogs want to be best in show.

Dr. Keri visits townie pets, farm animals and has a date with a donkey named Eeyore; Dr. Keri reflects on her love for her team, the people and pets whose lives she's changed, having a partner who loves and supports her.

A stray dog arrives at RAPS in rough shape and the team uncovers his surprising story; William, a street-wise cat, amazes Dr. Maldonado with his resilience; Odin, a German Eurasier, heads into surgery; Karen is handed a huge picking challenge.

A black cat with breathing problems gives the vets a run for their money; Bucky, a senior Labrador, takes a frightening turn during surgery; Lucy the Hedgehog surprises her owner with undetected health issues.

Hobo gets a paraplegic boy to take part in a Frisbee-throwing contest.

A night watchman and his German shepherd are framed for theft.

Orangutan Malu destroys his playroom; an elderly horse must undergo a dangerous procedure; keepers must decide if it's time to say goodbye to one of the zoo's giraffes.

An uninvited resident, the brush turkey, wreaks havoc at Taronga Zoo.

It's a close battle for the title of top-earning boat as Gloucester's bluefin tuna fleet charges into the heart of the fishing season.

Hobo gets a paraplegic boy to take part in a Frisbee-throwing contest.

A night watchman and his German shepherd are framed for theft.

Andre and Michelle abandon the search for mackerel in favor of herring; Morris navigates blind in dangerous fishing grounds.

Skipper Paul Tiller and his crew fish for urchin; Morris Anstey continues a hot streak of fishing luck; Andre and Michelle Jesso still seek their first big catch.

Skipper Paul Tiller's crew find conditions increasingly difficult to dive for urchin; Skipper Morris Anstey races to catch as much herring as possible before the fish plant closes.

Cyril and his team embark on a mission to search for the venomous short-tailed river stingray in Argentina and help the locals develop an antitoxin.

Andre and Michelle abandon the search for mackerel in favor of herring; Morris navigates blind in dangerous fishing grounds.

Skipper Paul Tiller and his crew fish for urchin; Morris Anstey continues a hot streak of fishing luck; Andre and Michelle Jesso still seek their first big catch.

Skipper Paul Tiller's crew find conditions increasingly difficult to dive for urchin; Skipper Morris Anstey races to catch as much herring as possible before the fish plant closes.

Cyril and his team embark on a mission to search for the venomous short-tailed river stingray in Argentina and help the locals develop an antitoxin.

A black rhino labor takes an alarming turn; a kangaroo needs surgery.

A gibbon finds his song; platypuses return to a national park.

Maya the lioness complains about a broken tooth and needs to go to the dentist; newcomer Eve receives swimming lessons from her fellow seals.

A behind-the-scenes look at what it takes to run the Taronga Zoo Sydney, Australia's largest zoo, located on the shores of Sydney Harbour.

A behind-the-scenes look at what it takes to run the Taronga Zoo, Sydney, Australia's largest zoo, located on the shores of Sydney Harbour.

Jacob learns about managing the coexistence of savannah animals; zoo staff face challenges during a health check of two kangaroos.

A black rhino labor takes an alarming turn; a kangaroo needs surgery.

A gibbon finds his song; platypuses return to a national park.

Maya the lioness complains about a broken tooth and needs to go to the dentist; newcomer Eve receives swimming lessons from her fellow seals.

A behind-the-scenes look at what it takes to run the Taronga Zoo Sydney, Australia's largest zoo, located on the shores of Sydney Harbour.

A behind-the-scenes look at what it takes to run the Taronga Zoo, Sydney, Australia's largest zoo, located on the shores of Sydney Harbour.

Hobo helps a paroled ex-convict who is uncertain about what to do when he learns of a drug ring.

Hobo helps a struggling artist who has become involved with some hilarious gangsters.

Jacob learns about managing the coexistence of savannah animals; zoo staff face challenges during a health check of two kangaroos.

Two of Taronga's quokkas, known as the happiest animals in the world, have extra reason to smile now that staff have discovered that one of them is carrying a little one in her pouch.

Burdened by the responsibility of providing for their families and crew, the captains grow desperate to catch and tempers flare.

Hobo helps a paroled ex-convict who is uncertain about what to do when he learns of a drug ring.

Hobo helps a struggling artist who has become involved with some hilarious gangsters.

A violent attack happened to a tribesman in the Bolivian jungle.

Cyril is trying to catch a fish that can weigh more than a thousand pounds and is known to be so strong that fishermen have been pulled under and some have even been impaled by its bill.

Off the coast of Tanzania lurks a fish so violent it is known to ram sharks to death and even attack humans.

Cyril fights off bear attacks and wolves, as he goes to the edge of the Arctic into unchartered territory and hears tales of big fish ripping apart fishermen's nets.

Stuck between a herd of elephants charging straight for him and the shark-infested waters on the other side, Cyril has nowhere to hide; he is in the jungle of Gabon, West Africa, on a mission to catch a predatory fish with a deadly bite.

In Polynesia, Cyril tries to catch a legendary fish known to the locals as the Uruati, but he isn't prepared for the incredible number of sharks lurking below the waters.

Stranded on a deserted island off the west coast of Panama, Cyril and his team are in survival mode; Cyril came to catch a huge Dientón, a large predator with huge teeth, but things did not go according to plan.

A violent attack happened to a tribesman in the Bolivian jungle.

Cyril is trying to catch a fish that can weigh more than a thousand pounds and is known to be so strong that fishermen have been pulled under and some have even been impaled by its bill.

Off the coast of Tanzania lurks a fish so violent it is known to ram sharks to death and even attack humans.

Cyril fights off bear attacks and wolves, as he goes to the edge of the Arctic into unchartered territory and hears tales of big fish ripping apart fishermen's nets.

Stuck between a herd of elephants charging straight for him and the shark-infested waters on the other side, Cyril has nowhere to hide; he is in the jungle of Gabon, West Africa, on a mission to catch a predatory fish with a deadly bite.

In Polynesia, Cyril tries to catch a legendary fish known to the locals as the Uruati, but he isn't prepared for the incredible number of sharks lurking below the waters.

Stranded on a deserted island off the west coast of Panama, Cyril and his team are in survival mode; Cyril came to catch a huge Dientón, a large predator with huge teeth, but things did not go according to plan.

Warden Greenway braves the elements to patrol ice fishermen; a snowmobiler runs into trouble when the warden finds he doesn't have a valid registration; wardens come across a deer hunter on opening day who doesn't have a hunting license.

At Taronga Western Plains Zoo, 21-year-old southern black rhinoceros Sentwali is anaesthetised for a complex dental examination after keepers notice he has been dropping food. Elsewhere, long-awaited elephant mum Anjalee goes into labour after 22 months of pregnancy.

Dr. Keri tries out some traditional and new dog sports to find out how to keep dogs fit and mentally healthy.

Dr. Keri treats ailments specific to cats, and then sees firsthand how those feline issues can also be a concern for big cats like cougars.

After Dr. Keri's ultrasound indicates that the Sheltie, Mimic, is pregnant, the show follows the puppies' progress from birth to four weeks old.

Breeder Kerry Nemet prepares a litter of Shetland Sheepdog puppies for their future lives.

Dr. Keri tries out some traditional and new dog sports to find out how to keep dogs fit and mentally healthy.

Dr. Keri treats ailments specific to cats, and then sees firsthand how those feline issues can also be a concern for big cats like cougars.

Hobo helps a shoplifting ex-vaudevillian get a job.

Hobo makes a would-be crook return stolen goods and start a new life without crime.

After Dr. Keri's ultrasound indicates that the Sheltie, Mimic, is pregnant, the show follows the puppies' progress from birth to four weeks old.

Breeder Kerry Nemet prepares a litter of Shetland Sheepdog puppies for their future lives.

Warden Greenway braves the elements to patrol ice fishermen; a snowmobiler runs into trouble when the warden finds he doesn't have a valid registration; wardens come across a deer hunter on opening day who doesn't have a hunting license.

At Taronga Western Plains Zoo, 21-year-old southern black rhinoceros Sentwali is anaesthetised for a complex dental examination after keepers notice he has been dropping food. Elsewhere, long-awaited elephant mum Anjalee goes into labour after 22 months of pregnancy.

Hobo helps a shoplifting ex-vaudevillian get a job.

Hobo makes a would-be crook return stolen goods and start a new life without crime.

Cyril and his team of adventurous filmmakers search the waters of Nicaragua to help local scientists find the mighty tarpon.

Between the hippos and man-eating crocodiles in Gabon, Cyril remains on high alert in his small tippy dugout; to find the elusive giant barracuda he's after, he ventures into a hostile jungle and fishes waters teeming with bull sharks.

In Uganda, Niall learns that villagers are causing the population of lions to decline.

Keepers prepare Taronga's five new lion cubs for their public debut.

Dr. Keri and her crew travel to a Sheltie breeder, where Breeze the dog faces a serious prognosis; Keri and her canines compete in national dog shows where all the top dogs want to be best in show.

Dr. Keri visits townie pets, farm animals and has a date with a donkey named Eeyore; Dr. Keri reflects on her love for her team, the people and pets whose lives she's changed, having a partner who loves and supports her.

A major health scare, unreliable machinery and the Victorian weather challenge the Poseidon Crew; the Heli Hunters get into dangerous trouble chasing their dream of buying a gold lease.

Alan and Salty fight impenetrable bush to pursue a gold rush legend in the hidden valleys of the Margaret River; the McGhies try to work two patches at once despite failing machinery; Paul Mackie takes on a massive gold extraction process.

Competition intensifies amongst the Gloucester fleet when tuna become scarce.

Cyril and his team of adventurous filmmakers search the waters of Nicaragua to help local scientists find the mighty tarpon.

Between the hippos and man-eating crocodiles in Gabon, Cyril remains on high alert in his small tippy dugout; to find the elusive giant barracuda he's after, he ventures into a hostile jungle and fishes waters teeming with bull sharks.

In Uganda, Niall learns that villagers are causing the population of lions to decline.

Keepers prepare Taronga's five new lion cubs for their public debut.

Dr. Keri and her crew travel to a Sheltie breeder, where Breeze the dog faces a serious prognosis; Keri and her canines compete in national dog shows where all the top dogs want to be best in show.

Dr. Keri visits townie pets, farm animals and has a date with a donkey named Eeyore; Dr. Keri reflects on her love for her team, the people and pets whose lives she's changed, having a partner who loves and supports her.

Competition intensifies amongst the Gloucester fleet when tuna become scarce.

A major health scare, unreliable machinery and the Victorian weather challenge the Poseidon Crew; the Heli Hunters get into dangerous trouble chasing their dream of buying a gold lease.

Alan and Salty fight impenetrable bush to pursue a gold rush legend in the hidden valleys of the Margaret River; the McGhies try to work two patches at once despite failing machinery; Paul Mackie takes on a massive gold extraction process.

Cyril and his team of adventurous filmmakers search the waters of Nicaragua to help local scientists find the mighty tarpon.

Between the hippos and man-eating crocodiles in Gabon, Cyril remains on high alert in his small tippy dugout; to find the elusive giant barracuda he's after, he ventures into a hostile jungle and fishes waters teeming with bull sharks.

In Uganda, Niall learns that villagers are causing the population of lions to decline.

Hobo vindicates a lad accused of being a sissy.

A retired truck driver who finds himself in possession of stolen furs is tracked by the real thieves.

Dr. Keri and her crew travel to a Sheltie breeder, where Breeze the dog faces a serious prognosis; Keri and her canines compete in national dog shows where all the top dogs want to be best in show.

Dr. Keri visits townie pets, farm animals and has a date with a donkey named Eeyore; Dr. Keri reflects on her love for her team, the people and pets whose lives she's changed, having a partner who loves and supports her.

Warden Greenway braves the elements to patrol ice fishermen; a snowmobiler runs into trouble when the warden finds he doesn't have a valid registration; wardens come across a deer hunter on opening day who doesn't have a hunting license.

At Taronga Western Plains Zoo, 21-year-old southern black rhinoceros Sentwali is anaesthetised for a complex dental examination after keepers notice he has been dropping food. Elsewhere, long-awaited elephant mum Anjalee goes into labour after 22 months of pregnancy.

Hobo vindicates a lad accused of being a sissy.

A retired truck driver who finds himself in possession of stolen furs is tracked by the real thieves.

Conway and his father risk fishing 220 miles off the north coast of Newfoundland; rookie skipper Rick Crane wants to prove he's as good as any fisherman; Morris Anstey's crew launches their crab season in Iceberg Alley.

It's lobster season for Rick Crane, who hopes to make enough money to cover his first boat payment; Morris Anstey and his crew are exhausted after two weeks at sea.

Skipper Paul Tiller and the crew of the Atlantic Bandit chase capelin; Morris puts First Mate Darryl Fudge in charge of his old boat; the Crane's Legacy heads for the crab grounds.

A baby echidna must be hand raised in order to have a chance at life.

A look at the lives of Montana conservation officers who defend public lands, handle anti-poaching sting operations and more.

In Western Australia, Mel and Alex are understaffed and get some much-needed help for the Gold Devils; the whole McGhies family pulls together to exploit a new gold-rich ground.

Oppressive heat forces Jacqui and Andrew to work at night, but they encounter a tarantula and other threatening wildlife; the Gold Devils travel on horseback and motorbike in a desperate attempt to find a new patch of gold.

Nine weeks into the fishing season, the captains feel the pressure to catch, and several are trying new techniques.

Conway and his father risk fishing 220 miles off the north coast of Newfoundland; rookie skipper Rick Crane wants to prove he's as good as any fisherman; Morris Anstey's crew launches their crab season in Iceberg Alley.

It's lobster season for Rick Crane, who hopes to make enough money to cover his first boat payment; Morris Anstey and his crew are exhausted after two weeks at sea.

Skipper Paul Tiller and the crew of the Atlantic Bandit chase capelin; Morris puts First Mate Darryl Fudge in charge of his old boat; the Crane's Legacy heads for the crab grounds.

A baby echidna must be hand raised in order to have a chance at life.

A look at the lives of Montana conservation officers who defend public lands, handle anti-poaching sting operations and more.

Nine weeks into the fishing season, the captains feel the pressure to catch, and several are trying new techniques.

In Western Australia, Mel and Alex are understaffed and get some much-needed help for the Gold Devils; the whole McGhies family pulls together to exploit a new gold-rich ground.

Oppressive heat forces Jacqui and Andrew to work at night, but they encounter a tarantula and other threatening wildlife; the Gold Devils travel on horseback and motorbike in a desperate attempt to find a new patch of gold.

Conway and his father risk fishing 220 miles off the north coast of Newfoundland; rookie skipper Rick Crane wants to prove he's as good as any fisherman; Morris Anstey's crew launches their crab season in Iceberg Alley.

It's lobster season for Rick Crane, who hopes to make enough money to cover his first boat payment; Morris Anstey and his crew are exhausted after two weeks at sea.

Skipper Paul Tiller and the crew of the Atlantic Bandit chase capelin; Morris puts First Mate Darryl Fudge in charge of his old boat; the Crane's Legacy heads for the crab grounds.

A second-rate magician is wrongly accused of making a diamond disappear.

Hobo helps a modern-day Romeo and Juliet overcome their parents' objections to their marriage plans.

A look at the lives of Montana conservation officers who defend public lands, handle anti-poaching sting operations and more.

Keepers prepare Taronga's five new lion cubs for their public debut.

Competition intensifies amongst the Gloucester fleet when tuna become scarce.

A second-rate magician is wrongly accused of making a diamond disappear.

Hobo helps a modern-day Romeo and Juliet overcome their parents' objections to their marriage plans.

The Master Carve gets personal; one carver finds redemption and an emotional elimination ceremony takes hold of the carvers; in this competition, one is only as good as their last carve.

A shocking twist kicks off this week's challenges; as the judges' expectations increase, so does the pressure to win.

Peter and Angelika race to rescue two cubs whose mother was hit by a car.

Angelika is exhausted and accidentally leaves a cage door unlocked; when two cubs escape, she must try to get them back; Peter tries to capture a wily wolf.

Lizards and snakes are challenged with puzzles for their enrichment.

The Integrated single stem crew fights to finish The Drop, but the wind and fog are fighting back; the Peters crew suffers a huge mechanical malfunction that could derail their plan to finish the block before snow flies.

The Opal Whisperers gamble their livelihoods, switching claims and partners late in the season, and the Bushmen struggle to mine as Les is struck down by a mystery illness.

The Cheals rush the installation of a new wash plant after a breakdown halves their opal production, and the Blacklighters test a new team member.

As time runs out in the North Atlantic bluefin tuna season, every boat in the Gloucester fleet feels the pressure.

The Master Carve gets personal; one carver finds redemption and an emotional elimination ceremony takes hold of the carvers; in this competition, one is only as good as their last carve.

A shocking twist kicks off this week's challenges; as the judges' expectations increase, so does the pressure to win.

Peter and Angelika race to rescue two cubs whose mother was hit by a car.

Angelika is exhausted and accidentally leaves a cage door unlocked; when two cubs escape, she must try to get them back; Peter tries to capture a wily wolf.

Lizards and snakes are challenged with puzzles for their enrichment.

The Integrated single stem crew fights to finish The Drop, but the wind and fog are fighting back; the Peters crew suffers a huge mechanical malfunction that could derail their plan to finish the block before snow flies.

As time runs out in the North Atlantic bluefin tuna season, every boat in the Gloucester fleet feels the pressure.