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.

A bomb, murder, and a foiled multi-million insurance scam on the high seas.

Perhaps the smartest penguins live among deserts, tropics and humankind.

Never-before-seen archive helps tell the story of the often-overlooked Italian Campaign as it nears the 80th anniversary of its commencement in 2023.

A bomb, murder, and a foiled multi-million insurance scam on the high seas.

Perhaps the smartest penguins live among deserts, tropics and humankind.

Never-before-seen archive helps tell the story of the often-overlooked Italian Campaign as it nears the 80th anniversary of its commencement in 2023.

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.

The Stoop family wants a rescue dog to befriend their youngest son.

The Collins family picks between three rescue dogs.

The Mesly's look for a puppy to complete their happy family.

Twiga the giraffe gives birth; a camel is hurt and in a bad mood; Charles thrives after surgery.

Karen works with Wambli in the show; Diane feeds and pens the tigers; Dr. Graham Crawshaw examines the baby giraffe.

John Armstrong, the Indian rhino keeper; breeding tarantulas; a new liter of Arctic wolf pups.

The Stoop family wants a rescue dog to befriend their youngest son.

The Collins family picks between three rescue dogs.

The Mesly's look for a puppy to complete their happy family.

Twiga the giraffe gives birth; a camel is hurt and in a bad mood; Charles thrives after surgery.

Karen works with Wambli in the show; Diane feeds and pens the tigers; Dr. Graham Crawshaw examines the baby giraffe.

John Armstrong, the Indian rhino keeper; breeding tarantulas; a new liter of Arctic wolf pups.

The Mesly's look for a puppy to complete their happy family.

Twiga the giraffe gives birth; a camel is hurt and in a bad mood; Charles thrives after surgery.

Soaring cliffs, canyons and water shape a diverse wildlife refuge in Zion.

Dr. Oakley treats a cat that swallowed a string and a pregnant reindeer with cancer.

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

The vets swing into action mending paws, jaws, and a down on his luck duck.

Dr. Nicole tends to her old, beloved beagle, and it's all hands on deck for a litter of 11 puppies.

Dr. Oakley treats a cat that swallowed a string and a pregnant reindeer with cancer.

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

Dr. Oakley faces a toxic emergency and removes the eye of an alpaca.

Dr. Oakley transports a bull by boat and sees chinchillas for a cuteness check.

Dr. Oakley treats a cat that swallowed a string and a pregnant reindeer with cancer.

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

Dr. Oakley faces a toxic emergency and removes the eye of an alpaca.

Dr. Oakley transports a bull by boat and sees chinchillas for a cuteness check.

Soaring cliffs, canyons and water shape a diverse wildlife refuge in Zion.

The filmmakers showcase the incredible world of cobras, from giant cannibalistic kings, bird-hunting specialists, to semi-aquatic toad hunters.

Soaring cliffs, canyons and water shape a diverse wildlife refuge in Zion.

The filmmakers showcase the incredible world of cobras, from giant cannibalistic kings, bird-hunting specialists, to semi-aquatic toad hunters.

The Harding family wants a puppy to have fun with.

The McGraynes are looking for a puppy and their son; Jackson wants to take all the puppies home.

Montgomery family are looking for a puppy for their daughter, Grace.

The oldest wolf must be put down; a Siberian tiger is pregnant; a python is weighed.

The African elephant is still acting out; a trumpeter swan bothers patrons; a tahr get his shots.

An overweight turtle; an Indian rhino can't take a hint; pinatas with the orangutans favorites.

The Harding family wants a puppy to have fun with.

The McGraynes are looking for a puppy and their son; Jackson wants to take all the puppies home.

Montgomery family are looking for a puppy for their daughter, Grace.

The oldest wolf must be put down; a Siberian tiger is pregnant; a python is weighed.

The African elephant is still acting out; a trumpeter swan bothers patrons; a tahr get his shots.

An overweight turtle; an Indian rhino can't take a hint; pinatas with the orangutans favorites.

Montgomery family are looking for a puppy for their daughter, Grace.

The oldest wolf must be put down; a Siberian tiger is pregnant; a python is weighed.

An American trailblazer, Yellowstone is renowned for its natural wonders.

Dr. Oakley treats a limping bison and a litter of puppies struggling to survive.

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

Dr. Oakley faces a toxic emergency and removes the eye of an alpaca.

Dr. Oakley transports a bull by boat and sees chinchillas for a cuteness check.

Dr. Oakley treats a limping bison and a litter of puppies struggling to survive.

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

A monkey breaks a window; a bear crashes a party; a boy escapes sharks.

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

Dr. Oakley treats a limping bison and a litter of puppies struggling to survive.

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

A monkey breaks a window; a bear crashes a party; a boy escapes sharks.

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

An American trailblazer, Yellowstone is renowned for its natural wonders.

Earth is inhabited by some of the deadliest and most poisonous serpents, the hunters that balance the ecosystem by gobbling the rodents and pests.

An American trailblazer, Yellowstone is renowned for its natural wonders.

Earth is inhabited by some of the deadliest and most poisonous serpents, the hunters that balance the ecosystem by gobbling the rodents and pests.

The Dyer family are looking for a service dog for their autistic son.

The Chretien family look for the right puppy for their shy son Julian.

Inji is looking for a puppy for her daughter Yasmine, who ends up loving all of them.

A Siberian tiger gives birth prematurely; a blind bird goes for a stroll; a cheetah gets an exam.

The keepers have a half hour to move three cheetahs; Patsy finally obeys; Chao Nao the red panda.

Wood bison are moved to the Calgary Zoo; the gorillas try out their new home; two polar bear cubs.

The Dyer family are looking for a service dog for their autistic son.

The Chretien family look for the right puppy for their shy son Julian.

Inji is looking for a puppy for her daughter Yasmine, who ends up loving all of them.

A Siberian tiger gives birth prematurely; a blind bird goes for a stroll; a cheetah gets an exam.

The keepers have a half hour to move three cheetahs; Patsy finally obeys; Chao Nao the red panda.

Wood bison are moved to the Calgary Zoo; the gorillas try out their new home; two polar bear cubs.

Inji is looking for a puppy for her daughter Yasmine, who ends up loving all of them.

A Siberian tiger gives birth prematurely; a blind bird goes for a stroll; a cheetah gets an exam.

From volcanic origins, Katmai's lush expanse boasts more than just bears.

Dr. Oakley tries to outsmart a herd of bison and fights for the life of a cherished friend.

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

A monkey breaks a window; a bear crashes a party; a boy escapes sharks.

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

Dr. Oakley tries to outsmart a herd of bison and fights for the life of a cherished friend.

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

The docs mend a downed eagle that was found injured in a cow pasture.

Dr. Oakley tries to outsmart a herd of bison and fights for the life of a cherished friend.

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

The docs mend a downed eagle that was found injured in a cow pasture.

From volcanic origins, Katmai's lush expanse boasts more than just bears.

The filmmakers showcase the mamba, the fastest and longest venomous snake in Africa, and highlight its shy and highly intelligent nature.

From volcanic origins, Katmai's lush expanse boasts more than just bears.

The filmmakers showcase the mamba, the fastest and longest venomous snake in Africa, and highlight its shy and highly intelligent nature.

The Boccanfuso sisters are looking for a puppy to join their close knit family.

The LaBarbera family are looking for a large breed dog to watch over their family.

Hunting for a cute mixed-breed pup that family dog Dexter will get along with.

A female polar bear has a hysterectomy; a new lion exhibit; a red panda is trained.

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 Boccanfuso sisters are looking for a puppy to join their close knit family.

The LaBarbera family are looking for a large breed dog to watch over their family.

Hunting for a cute mixed-breed pup that family dog Dexter will get along with.

A female polar bear has a hysterectomy; a new lion exhibit; a red panda is trained.

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.

Hunting for a cute mixed-breed pup that family dog Dexter will get along with.

A female polar bear has a hysterectomy; a new lion exhibit; a red panda is trained.

An ecological treasure of North America, the Everglades brims with life.

Dr. Oakley operates on an unusual mass and investigates a musk ox with a hair loss problem.

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

The docs mend a downed eagle that was found injured in a cow pasture.

Dr. Oakley operates on an unusual mass and investigates a musk ox with a hair loss problem.

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