Dr. Oakley treats an emaciated chicken and a dog with a lacerated paw.

Clinic house cat, Tater, falls ill and the team bands together to save him.

When a sick dog can barely walk, the PVS vets are on the case.

PVS is busy with a sick Shih Tzu, boisterous camels, and a hungry iguana.

From a harrowing farrowing to broken bones, the PVS vets pull off miracles.

Donkeys, ducks and dogs, from quirky to jaw dropping.

The canine unit brings home the bacon; A traveler discovers she's got a friend in high places.

Joining dedicated teams of agents at Canada's airports and seaports as they intercept visitors smuggling illegal contraband and tourists with tall stories.

A captain navigates troubled waters when he forgets to declare himself to the authorities.

An American arrives at customs with firearms; a traveler makes a breathtaking statement.

African wildlife; horseshoe crab blood; a dinosaur embryo; knots in string; a comet's tail.

Cam and his crew hurry to begin sluicing Donovan cut; Karl motivates his crew; Chris and Nika face a sluice plant breakdown.

Engine trouble plagues Buffalo's newest plane; a standoff between Joe and Transport Canada threatens to close the airline; Joe faces a tough decision about his old dog Sophie.

The canine unit brings home the bacon; A traveler discovers she's got a friend in high places.

Joining dedicated teams of agents at Canada's airports and seaports as they intercept visitors smuggling illegal contraband and tourists with tall stories.

A captain navigates troubled waters when he forgets to declare himself to the authorities.

An American arrives at customs with firearms; a traveler makes a breathtaking statement.

While the arrival of the Spaniards in the 16th century triggered a series of wars that caused the abandonment of the great Mayan cities, there is evidence that the Mayans never disappeared and their civilization never fell.

New discoveries reveal the secrets of Roman gladiators' enduring appeal.

Archaeologists dig in Pompeii to uncover its dark secrets.

Archaeologists reveal the stunning new discovery of a Nero megastructure.

Discoveries uncover how the Romans ruled the seas for four centuries.

Archaeologists excavate a buried city in Jordan, dive a sunken temple in Italy, and explore Petra to shed new light on how Rome conquered the east.

Archaeologists excavate the vast frontier of the Roman Empire, investigating the battle to keep it safe.

A beaver smells something strange, chickens run on wet concrete, and a dog steals a pacifier.

A monkey steals food, a lizard surprises a lady and a bear breaks a gate.

A spider hides in a shoe, a squirrel scores a touchdown, and a terrier is offended by a balloon.

A beaver smells something strange, chickens run on wet concrete, and a dog steals a pacifier.

A monkey steals food, a lizard surprises a lady and a bear breaks a gate.

A spider hides in a shoe, a squirrel scores a touchdown, and a terrier is offended by a balloon.

While the arrival of the Spaniards in the 16th century triggered a series of wars that caused the abandonment of the great Mayan cities, there is evidence that the Mayans never disappeared and their civilization never fell.

New discoveries reveal the secrets of Roman gladiators' enduring appeal.

Archaeologists dig in Pompeii to uncover its dark secrets.

Archaeologists reveal the stunning new discovery of a Nero megastructure.

As the end of the season nears, Mark Kohaykewych makes a deal with rivals Darrell Ward and Lisa Kelly to join forces for a four-truck convoy; Alex Debogorski must complete one of the longest trails; Art Burke's truck gives out on the ice.

A female snow leopard arrives from Calgary; the crocodiles and meerkats get new homes.

Rain-forest exhibit; monkey and trainer bond; young camel begins training.

As the end of the season nears, Mark Kohaykewych makes a deal with rivals Darrell Ward and Lisa Kelly to join forces for a four-truck convoy; Alex Debogorski must complete one of the longest trails; Art Burke's truck gives out on the ice.

A female snow leopard arrives from Calgary; the crocodiles and meerkats get new homes.

Rain-forest exhibit; monkey and trainer bond; young camel begins training.

The docs at Critter Fixer embark on their new "Vet for a Day" national tour.

With extra scenes; the docs work to keep the clinic clean while meeting an adventurous cockatiel, an eager beaver and a cow that takes them surfing.

The docs at Critter Fixer operate on an eel and perform a snake C-section.

The Docs are awarded keys to the city for years of community service; helping a red tail boa; introducing a kid to a kid.

The docs at Critter Fixer help 15 celebrity chihuahuas and a baby duckling.

To avenge 9/11, DEA agent Jeff Higgins pursues Afghan kingpin Haji Bagcho.

Enhanced episode; how a party bro became the biggest pill mill boss in the U.S.

Enhanced episode; chemists, gangs and cartels bring in fentanyl.

Students begin an intense journey to ISEF; before they can advance to the international science stage, they have to compete in local fairs.

Qualifying science fair season begins for students in Monte Vista, CO and San Juan, PR who hope this will be their year to make it to ISEF.

ISEF, the International Science and Engineering Fair; finding out who out of 2,000 students make it.

The Docs at Critter Fixer strive to aid the animals of service members.

The docs at Critter Fixer exemplify treating both ends of the leash.

ISEF, the International Science and Engineering Fair; finding out who out of 2,000 students make it.

The Docs at Critter Fixer strive to aid the animals of service members.

The docs at Critter Fixer exemplify treating both ends of the leash.

The docs at Critter Fixer embark on their new "Vet for a Day" national tour.

With extra scenes; the docs work to keep the clinic clean while meeting an adventurous cockatiel, an eager beaver and a cow that takes them surfing.

The docs at Critter Fixer operate on an eel and perform a snake C-section.

The Docs are awarded keys to the city for years of community service; helping a red tail boa; introducing a kid to a kid.

The truckers in the historic four-truck convoy face fire and a thin crossing; after Art Burke's engine dies, he must travel back to Winnipeg with Alex Debogorski over a trail that destroys his truck.

A monkey is reintroduced to his family; baby fruit-bat; tree kangaroo.

Andrea checks the black footed ferret for babies; Chao Nao; Tahra trains with Merlin the falcon.

The truckers in the historic four-truck convoy face fire and a thin crossing; after Art Burke's engine dies, he must travel back to Winnipeg with Alex Debogorski over a trail that destroys his truck.

A monkey is reintroduced to his family; baby fruit-bat; tree kangaroo.

Andrea checks the black footed ferret for babies; Chao Nao; Tahra trains with Merlin the falcon.

With the biggest storm in centuries only a few days away, the truckers race for loads; Art and Todd set out to prove themselves.

Descendants of survivors of the last American slave ship visit the land of their ancestors.

Drug lord Khun Sa floods New York, N.Y., with purity heroin until the DEA hatches a plan.

In this enhanced episode, an army veteran helps flood Harlem with heroin.

The mob connects with the Mujahideen to create an ambitious heroin pipeline.

The Bible describes Nineveh as a wicked city of sin; finding if new discoveries in Iraq and Israel can shed light on the events behind this fearsome reputation.

New discoveries unlock the origins of the Bible's flood story.

Archaeologists discover evidence that sheds fresh light on historical influences from Egypt for the biblical tale of the Exodus.

Archaeologists discover new evidence in Iraq that sheds light on the historical influences of the Bible's Tower of Babel story.

Archaeologists make groundbreaking discoveries about the world of Solomon.

Many persons revile King Herod as one of the evil characters in the Bible; later historians coin him Herod "the Great.".

In Antarctica, emperor penguin societies reveal the bonds they forge from birth, which are the key to survival in their habitat.

A colorful collection of daredevils inspires David to take a leap of faith.

Many persons revile King Herod as one of the evil characters in the Bible; later historians coin him Herod "the Great.".

In Antarctica, emperor penguin societies reveal the bonds they forge from birth, which are the key to survival in their habitat.

A colorful collection of daredevils inspires David to take a leap of faith.

Drug lord Khun Sa floods New York, N.Y., with purity heroin until the DEA hatches a plan.

In this enhanced episode, an army veteran helps flood Harlem with heroin.

The mob connects with the Mujahideen to create an ambitious heroin pipeline.

The Bible describes Nineveh as a wicked city of sin; finding if new discoveries in Iraq and Israel can shed light on the events behind this fearsome reputation.

An irritated traveler pushes officers to the limit; Haitian fruits may contain more than vitamins.

An untruthful traveler is missing two bags; a favor may land an American in hot water; mail center officers uncover a narcotic scheme; a traveler's visa is revealing; a student learns a lesson; a producer's luggage could be showstopper.

A pleasant American jumps the gun when he decides to go on a quick day-trip; a cheerful traveller's trip is in the bag; a baggage search turns cheesy; a traveller's odd luggage needs to go through the proper channels.

Joe goes for medical testing in Arizona; Jeff and Sam stress over their checkflights; Joe celebrates turning 17.

British Prime Minister Winston Churchill risks his life during the Blitz; Nazis torture a housewife-spy; Saddam Hussein faces defeat; modern-day soldiers become invisible.

The truckers race to deliver their loads while a massive storm approaches; Lisa and Art face a deadly shutdown; Darrell and Todd's feud threatens to rip team Polar apart.

An irritated traveler pushes officers to the limit; Haitian fruits may contain more than vitamins.

An untruthful traveler is missing two bags; a favor may land an American in hot water; mail center officers uncover a narcotic scheme; a traveler's visa is revealing; a student learns a lesson; a producer's luggage could be showstopper.

A pleasant American jumps the gun when he decides to go on a quick day-trip; a cheerful traveller's trip is in the bag; a baggage search turns cheesy; a traveller's odd luggage needs to go through the proper channels.

HSI finds overcrowded human stash houses; CBP discovers meth in machinery.

HSI Miami catches a load of cocaine-filled fish; CBP San Diego fights human smuggling.

HSI busts a ketamine smuggler, while CBP uncovers ancient gold looted from Afghanistan.

AMO Puerto Rico sinks a marine smuggling op; HSI San Diego seals up a drug tunnel.

HSI busts a notorious dark web trafficker in France, while CPB finds fentanyl in Arizona.

AMO agents in Puerto Rico chase a fleeing boat carrying $2.5 million worth of cocaine.

CBP discovers abandoned fentanyl in Texas; HSI tracks an ecstasy package in Chicago.

HSI attempts a controlled delivery of meth in New York City, while CBP seizes party drugs in Florida.

Residents tackle tasks at the height of summer's season of productivity.

The risk of a second bomb explosion causes widespread panic and leads to the evacuation of the bomb site; despite their convictions, rescuers must leave the trapped and frightened survivors behind.

HSI attempts a controlled delivery of meth in New York City, while CBP seizes party drugs in Florida.

Residents tackle tasks at the height of summer's season of productivity.

The risk of a second bomb explosion causes widespread panic and leads to the evacuation of the bomb site; despite their convictions, rescuers must leave the trapped and frightened survivors behind.

HSI finds overcrowded human stash houses; CBP discovers meth in machinery.

HSI Miami catches a load of cocaine-filled fish; CBP San Diego fights human smuggling.

HSI busts a ketamine smuggler, while CBP uncovers ancient gold looted from Afghanistan.

AMO Puerto Rico sinks a marine smuggling op; HSI San Diego seals up a drug tunnel.

A woman returning from a trip to China has business cards to a Sydney brothel and passports for three Chinese girls.

A piece of salmon comes up positive for cocaine; Syrian carpets have something suspicious woven into the fabric.

A man arrives from Beijing with strong readings for narcotics; three men want to visit a temple that hasn't been built yet.

A woman's belongings are positive for heroin; a Malaysian man arrives looking for work.

Jeff almost runs off of the runway; Prefkar learns how to play hockey; Joe goes on a date with a real dog.

Ancient athletes kick a severed head; floating human sacrifices; channeling the dead using crystal skulls; arrogance dooms a city; powerful peasant dress.

A storm delivers deadly driving conditions as the truckers struggle to deliver their loads.

A woman returning from a trip to China has business cards to a Sydney brothel and passports for three Chinese girls.

A piece of salmon comes up positive for cocaine; Syrian carpets have something suspicious woven into the fabric.

A man arrives from Beijing with strong readings for narcotics; three men want to visit a temple that hasn't been built yet.

A woman's belongings are positive for heroin; a Malaysian man arrives looking for work.

In this enhanced episode, the causes of three disasters are dissected.

Three real-world disasters forensically dissected: Deepwater Horizon explosion, the Concorde crash, the funicular fire at Kaprun.

The causes of three disasters involving a high-rise, a submarine and a subway station are dissected.

In this enhanced episode, the causes of three disasters are dissected, a nuclear plant, a tunnel and a department store.

Enhanced; three real-world disasters dissected: in space, a train and a high-rise.

Enhanced; three real-world disasters dissected: nuclear missile, ferry and oil rig.

In this enhanced episode, the causes of three disasters are dissected; Lac-Mégantic train crash, Imperial Sugar refinery explosion and Ever Given container ship accident.

Three real-world disasters forensically dissected: Fukushima nuclear plant, a Manhattan crane collapse, fire on the aircraft carrier USS Forrestal.

Three real-world disasters forensically dissected: Fukushima nuclear plant, a Manhattan crane collapse, fire on the aircraft carrier USS Forrestal.

In this enhanced episode, the causes of three disasters are dissected.

Three real-world disasters forensically dissected: Deepwater Horizon explosion, the Concorde crash, the funicular fire at Kaprun.

The causes of three disasters involving a high-rise, a submarine and a subway station are dissected.

In this enhanced episode, the causes of three disasters are dissected, a nuclear plant, a tunnel and a department store.

A woman with protruding pants attracts the attention of Customs; a passenger would rather go to court than pay a fine.

A woman tries to smuggle an expensive gift into Australia; a package from Hong Kong looks suspicious.

A fidgety passenger has officers on high alert because of what's found under his home's floorboards.

A musician claims to have special powers that help her see the future.

Mickey gets Buffalo involved in a D-Day paratrooper jump; Prefkar escapes courier duty.

Vikings test their might against unbreakable swords; the strange link between ancient architecture and Adolf Hitler; a golden hat predicts the future.

Darrell and Todd try to get through record breaking snowfall, while the rest of the team fights to survive; despite frigid temperatures the war between VP Express and Polar reaches a boiling point.

A woman with protruding pants attracts the attention of Customs; a passenger would rather go to court than pay a fine.

A woman tries to smuggle an expensive gift into Australia; a package from Hong Kong looks suspicious.

A fidgety passenger has officers on high alert because of what's found under his home's floorboards.

A musician claims to have special powers that help her see the future.

No matter the season, danger lurks in Alaska's backcountry.

Residents of Alaska must hunt to prepare for the harsh winter months ahead.

With winter approaching, rural Alaskans must prepare for their every need.

As the first signs of winter blanket the landscape, Alaskans must prepare.

The harsh Alaskan winter breeds ingenuity and adaptation to survive.

The work never ends as Alaskans prepare for another brutally harsh winter.

It's a hierarchy of predator versus prey, for all who live in Alaska.

The next generation is tireless in the hunt to secure Alaska's resources.

In South Africa, David explores how magic can reshape perceptions.

Dr. Oakley treats a cherished breeding bull and a cat with a worrying lump.

The next generation is tireless in the hunt to secure Alaska's resources.

In South Africa, David explores how magic can reshape perceptions.

Dr. Oakley treats a cherished breeding bull and a cat with a worrying lump.

No matter the season, danger lurks in Alaska's backcountry.

Residents of Alaska must hunt to prepare for the harsh winter months ahead.

With winter approaching, rural Alaskans must prepare for their every need.

As the first signs of winter blanket the landscape, Alaskans must prepare.

A father and son from China have four suitcases full of undeclared food; an immigration raid targets illegal workers.

An American tourist is caught renting by the hour, but insists she needs to meet up with her boyfriend.

At O'Hare International, a returning American's bananas cause a slip-up in secondary; a mother covers for her kid at Detroit's Ambassador Bridge; a car search is brought to a head in Washington State.

Officers search for a fugitive in Washington State; a cook is questioned on his way to Las Vegas; a canine flags several packages in Chicago; x-rays discover anomalies in Port Huron cargo.

Buffalo's top guns, rookies, and vets go to California for aerial dogfights in real fighter planes; Cory and Mikey race to get ready for the D-Day jump.

Inbreeding proves counterproductive to a royal family; silver becomes gold; exploding armor; historic dance craze; the art of falconry impacts science.

The truckers battle a massive storm.

A father and son from China have four suitcases full of undeclared food; an immigration raid targets illegal workers.

An American tourist is caught renting by the hour, but insists she needs to meet up with her boyfriend.

At O'Hare International, a returning American's bananas cause a slip-up in secondary; a mother covers for her kid at Detroit's Ambassador Bridge; a car search is brought to a head in Washington State.

Officers search for a fugitive in Washington State; a cook is questioned on his way to Las Vegas; a canine flags several packages in Chicago; x-rays discover anomalies in Port Huron cargo.

Cesar helps a pet parent whose three dogs battle to the point of bloodshed.

Cesar rehabs an overexcited Australian shepherd and its emotional pet parent.

Cesar helps an aggressive beagle and a Malinois that refuse to leave home.

A pitbulls aggression is fueled by fear; a Frenchie eats everything.

Cesar helps a possessed pit mix and a miniature dachshund with a giant bark.

Cesar rehabilitates a German shepherd whose behavior is getting dangerous.

A couple with a baby seeks Cesar's help with a dog who bites and guards.

An ice storm shuts down the clinic, and newborn labs are melting hearts.

Dr. Oakley vaccinates a jet-setting chihuahua, tries to outsmart a shifty coyote and meets a cow with an unusual growth.

Doctors from Pol Veterinary Services rush to help a distressed cow and her calf.

An ice storm shuts down the clinic, and newborn labs are melting hearts.

Dr. Oakley vaccinates a jet-setting chihuahua, tries to outsmart a shifty coyote and meets a cow with an unusual growth.

Doctors from Pol Veterinary Services rush to help a distressed cow and her calf.

Cesar helps a pet parent whose three dogs battle to the point of bloodshed.

Cesar rehabs an overexcited Australian shepherd and its emotional pet parent.

Cesar helps an aggressive beagle and a Malinois that refuse to leave home.

A pitbulls aggression is fueled by fear; a Frenchie eats everything.

An officer's expertise in body language pays off; a German rock band in Detroit; a hole in a traveler's story.

A Chicago canine unit discovers smugglers; officers enter a high-speed chase in Port Huron; a traveler triggers radiation alarms; bullets in Blaine, Washington.

In Detroit airport, a family travelling from the UK, may need to corroborate their story. Also a tip from authorities, puts officers at the Chicago International Mail facility on high alert.

Border officers stop a young British visitor meeting an American cyber pal at Detroit Metro Airport, and a Chinese traveller is caught using his mobile phone in a secondary inspection in Chicago.

Joe refuses to fly his DC-3 into the drop zone, threatening Mikey's D-Day tribute parachute jump.

A Christian fortress is attacked by Muslim invaders; a sultan is targeted for assassination; a harem slave becomes a powerful ruler; the signing of the world's first peace treaty.

Hugh has a plan to crush the competition; Todd and Lisa are pressured to up their game.

An officer's expertise in body language pays off; a German rock band in Detroit; a hole in a traveler's story.

A Chicago canine unit discovers smugglers; officers enter a high-speed chase in Port Huron; a traveler triggers radiation alarms; bullets in Blaine, Washington.

In Detroit airport, a family travelling from the UK, may need to corroborate their story. Also a tip from authorities, puts officers at the Chicago International Mail facility on high alert.

Border officers stop a young British visitor meeting an American cyber pal at Detroit Metro Airport, and a Chinese traveller is caught using his mobile phone in a secondary inspection in Chicago.

In June 2020, scientists discover Aguada Fenix, a monumental 3,000-year-old Maya structure, and uncover the secrets of this ancient monument.

New evidence unearthed in Mexico's Yucutan begins to transform long-held ideas about the growth of the Mayan civilization.

Evidence of man-made reservoirs and toxic contaminants, and clues of battles and monumental pressure paint a picture of the Maya's downfall.

While the arrival of the Spaniards in the 16th century triggered a series of wars that caused the abandonment of the great Mayan cities, there is evidence that the Mayans never disappeared and their civilization never fell.

Blackbeard's name strikes fear into all as a brutal diabolical pirate.

Braver than the men, Anne Bonny and Mary Read are ferocious female pirates.

Bartholomew Roberts is the most successful pirate of the Golden Age.

A baby goat stampede, a martial arts mantis, and a mouse in a house.

A honeybee attack; a chat with a raven; a bear interrupts a DJ set.

An alligator steals a golf ball; a sneaky snake; a unique mascot.

A baby goat stampede, a martial arts mantis, and a mouse in a house.

A honeybee attack; a chat with a raven; a bear interrupts a DJ set.

An alligator steals a golf ball; a sneaky snake; a unique mascot.

In June 2020, scientists discover Aguada Fenix, a monumental 3,000-year-old Maya structure, and uncover the secrets of this ancient monument.

New evidence unearthed in Mexico's Yucutan begins to transform long-held ideas about the growth of the Mayan civilization.

Evidence of man-made reservoirs and toxic contaminants, and clues of battles and monumental pressure paint a picture of the Maya's downfall.

While the arrival of the Spaniards in the 16th century triggered a series of wars that caused the abandonment of the great Mayan cities, there is evidence that the Mayans never disappeared and their civilization never fell.

With temperatures on the rise, conditions on the ice roads result in meltdown. The truckers from Polar and VP Express are pushed to the limit, crossing thin ice on their way to deliver critical loads.

Young gorilla bids her keeper farewell; baby ferret.

Zuri makes new friends at the airport; native elder comes to visit the grizzly bears.

With temperatures on the rise, conditions on the ice roads result in meltdown. The truckers from Polar and VP Express are pushed to the limit, crossing thin ice on their way to deliver critical loads.

Young gorilla bids her keeper farewell; baby ferret.

Zuri makes new friends at the airport; native elder comes to visit the grizzly bears.

The vets tackle a twisted calving, a flock of ducks and a pack of rats.

Pets in a jam with quills, fishhooks, and string go to PVS to get unstuck.

There's no time to rest with emergency calvings, rowdy pups, and ailing felines.

A new Pol family member is born.

A blocked bearded dragon; a feisty cow to dodge; a surprise for Tater.

A puppy tornado touches down at PVS; a cute kitten is rescued.

A snake with lumps, a cat with a sky-high temperature, and a goose on the loose.

Dr. Pol has the great honor of escorting U.S. veterans to Washington.

Dr. Pol and Diane celebrate a milestone that's been decades in the making.

Dr. Pol celebrates turning 80 with a trip to the Netherlands with Diane.

The Pols welcome a fluffy addition to the family; Tater is not pleased.

Welcome to the fair; Vets rally to keep dreams alive for hardworking kids.

Charles is worried about his dog Athena and looks to his dad for guidance.

The Pols welcome a fluffy addition to the family; Tater is not pleased.

Welcome to the fair; Vets rally to keep dreams alive for hardworking kids.

Charles is worried about his dog Athena and looks to his dad for guidance.

The vets tackle a twisted calving, a flock of ducks and a pack of rats.

Pets in a jam with quills, fishhooks, and string go to PVS to get unstuck.

There's no time to rest with emergency calvings, rowdy pups, and ailing felines.

A new Pol family member is born.

Lisa and Todd take on one of the toughest runs of the season; Darrell steals business from his former boss; Alex's trucking season is threatened by a crash.

A young rhino is weaned; Stevie the young bat is introduced to new keepers; two newborn Himalayan mountain goats learn how to be fed by keepers.

A young spider monkey rejoins his family; two rare European cranes bred at the zoo move to a new home.

Lisa and Todd take on one of the toughest runs of the season; Darrell steals business from his former boss; Alex's trucking season is threatened by a crash.

A young rhino is weaned; Stevie the young bat is introduced to new keepers; two newborn Himalayan mountain goats learn how to be fed by keepers.

A young spider monkey rejoins his family; two rare European cranes bred at the zoo move to a new home.

Examining the history of cats and dogs and how they have been helpful companions to humankind all over the globe.

A new discovery in the Baltic Sea reveals the story of a lost treasure.

Archaeologists on land and sea reveal secrets of the infamous Alamo siege.

A lost Kingdom and an underwater cave reveal secrets about the ancient Maya.

Revealing the drug smuggling routes that make cartels billions each year.

Archaeologists uncover the truth behind the legend of a treasure ship.

Lost wrecks reveal how the Mob gained power and wealth in 1920s America.

From Patagonia to Canada, paleontologists uncover the Real Jurassic Americas.

Draining Alaskas extreme north reveals the graveyard of a tragic fleet.

A US flagship wreck reveals the British burning of the White House in 1814.