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

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

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.

Officers add charges to a woman's lengthy rap sheet and stumble upon a hair-raising package from Malaysia.

Officers are stumped by a backpacker carrying photos of his criminal activities; an American band gets caught in a jam.

Staff confront an American soldier running scared; a British woman causes confusion with her bag of tricks.

Hidden compartments in a traveler's backpack raise red flags; the discovery of a deadly weapon leaves mail center workers stunned.

The Pickers invade Nova Scotia; Scott taunts Sheldon with a lucky tattoo; Red Indian sign; Keenan messes up at the warehouse.

Big Al risks his health to break even; Nika's brother makes a surprising decision; Ken and Guillaume dig deep; Karl tries to top his goal.

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

Officers add charges to a woman's lengthy rap sheet and stumble upon a hair-raising package from Malaysia.

Officers are stumped by a backpacker carrying photos of his criminal activities; an American band gets caught in a jam.

Staff confront an American soldier running scared; a British woman causes confusion with her bag of tricks.

Hidden compartments in a traveler's backpack raise red flags; the discovery of a deadly weapon leaves mail center workers stunned.

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.

Archaeologists uncover the secrets of Tutankhamun's religious reforms.

CBP in McAllen faces a possible bomb; HSI arrests fentanyl traffickers.

Ogedei is proclaimed ruler of the Mongol Empire; he conquers Armenia, Georgia and the Jin Empire and builds the capital city of Karakorum.

HSI tails vehicle transporting meth; CBP seizes looted Ukrainian relics.

CBP in McAllen faces a possible bomb; HSI arrests fentanyl traffickers.

Ogedei is proclaimed ruler of the Mongol Empire; he conquers Armenia, Georgia and the Jin Empire and builds the capital city of Karakorum.

HSI tails vehicle transporting meth; CBP seizes looted Ukrainian relics.

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.

Darrell and Lisa fight to make it home over the hardest-hit trail; Art and the King of Obsolete reunite to haul a huge double trailer over a slick path; veteran Alex Debogorski races against the clock to deliver to a town in need.

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.

Darrell and Lisa fight to make it home over the hardest-hit trail; Art and the King of Obsolete reunite to haul a huge double trailer over a slick path; veteran Alex Debogorski races against the clock to deliver to a town in need.

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.

Dr. Oakley treats a sheep with a large growth and the eye of a tiny owl.

Dr. Oakley treats a pair of neglected dogs, and Willow rescues feral cats.

Dr. Oakley lassos a calf, shears an overgrown sheep and treats a dog with an eye injury.

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

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

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

Dr. Oakley treats a baby elk with a limp, performs a dental on a musk ox and gives a roadside pedicure to a pig.

Dr. Oakley transports baby bison to their new home and treats a pair of therapy reindeer that help a veteran with PTSD.

Dr. Oakley treats a pair of debilitated chickens and a Highland cow that loves to give hugs; a reindeer farm hopes to turn its luck around.

Ahead of Sierra's departure for vet school, the team treats an emu, a dog with a bulging eye and a reindeer with a cracked antler.

Brazen attacks targeting people; seeing if sharks are competing with humans for food.

Scientists race to understand what exactly makes sharks so stealthy to save lives.

Experts investigate why most shark attack victims are men.

Brazen attacks targeting people; seeing if sharks are competing with humans for food.

Scientists race to understand what exactly makes sharks so stealthy to save lives.

Experts investigate why most shark attack victims are men.

Dr. Oakley treats a sheep with a large growth and the eye of a tiny owl.

Dr. Oakley treats a pair of neglected dogs, and Willow rescues feral cats.

Dr. Oakley lassos a calf, shears an overgrown sheep and treats a dog with an eye injury.

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

The two rival companies work together to take on the biggest challenge in Ice Road Truckers history, pulling a cat train across the frozen Hudson Bay, but the untested ice shatters under the weight of the heavy haul.

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.

The two rival companies work together to take on the biggest challenge in Ice Road Truckers history, pulling a cat train across the frozen Hudson Bay, but the untested ice shatters under the weight of the heavy haul.

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.

Lisa and Todd struggle to complete their daring joint venture across the frozen Hudson Bay; Darrell braves the most torn up trail remaining on the winter roads; Art must face the last open ice crossing.

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

David Blaine examines fear by learning to interact with venomous creatures.

In India, David explores how extreme physical feats can look like magic.

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

The new Nazi battleship Bismarck sets out to destroy Allied convoys in the Atlantic; it is up to the Royal Navy to stop it in its tracks.

April 1940, German battleships attack key Norwegian ports, but the British Navy are on their tail in a fierce fight over control of Norway.

After devastating Nazi bombing raids, fighting breaks out in the streets of Soviet Stalingrad in the bloodiest battle of WWII.

As WWII reaches its endgame, Allies and Soviets race to seize Berlin, uncovering Nazi secrets that reshape Europe and set the stage for the Cold War.

The filmmaker explores how wildlife on the Nicobar Islands recovered from the devastating 2004 Indian Ocean tsunami.

Reveals travel's impact on the human spirit and the creation of Inner Portrait's powerful, emotion-driven digital artwork.

Ben and Louise are inundated with a high volume of calls in a short period of time. On their first location, they come across two lethal snakes.

The filmmaker explores how wildlife on the Nicobar Islands recovered from the devastating 2004 Indian Ocean tsunami.

Reveals travel's impact on the human spirit and the creation of Inner Portrait's powerful, emotion-driven digital artwork.

Ben and Louise are inundated with a high volume of calls in a short period of time. On their first location, they come across two lethal snakes.

In India, David explores how extreme physical feats can look like magic.

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

The new Nazi battleship Bismarck sets out to destroy Allied convoys in the Atlantic; it is up to the Royal Navy to stop it in its tracks.

April 1940, German battleships attack key Norwegian ports, but the British Navy are on their tail in a fierce fight over control of Norway.

Officers look for a message in a bottle; a lack of papers land a group of LA rappers in the doghouse; a young man receives a wake-up call.

An accidental detour leads two Canadians to a dead-end; an ornate frame holds more than just a picture; a man is suspected of money laundering.

An American traveler has trouble recalling his hazy past; bad decisions may keep a rugby player off the pitch; a bag is found in a restricted area.

A traveler's belongings raise repeated alarms; a man's reasons for studying in Canada may not be academic; an American couple make the move to Alaska.

Find out how an Egyptian baby died 2000 years ago, as this tiny mummy is unwrapped.

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

Massive and sophisticated contributions from Korea have shaped our modern world, from ancient advances like the greenhouse and armoured boats to modern screen technology, online gaming, E-sports and K-Pop.

Officers look for a message in a bottle; a lack of papers land a group of LA rappers in the doghouse; a young man receives a wake-up call.

An accidental detour leads two Canadians to a dead-end; an ornate frame holds more than just a picture; a man is suspected of money laundering.

An American traveler has trouble recalling his hazy past; bad decisions may keep a rugby player off the pitch; a bag is found in a restricted area.

A traveler's belongings raise repeated alarms; a man's reasons for studying in Canada may not be academic; an American couple make the move to Alaska.

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.

CBP finds 142 kilos of coke worth over $7 million in a shipment of avocados in Florida.

Individuals use their skills to survive in Port Protection; a rocky beach poses challenges to installing a wind generator; a carpenter crafts a way to preserve meat; fishers attempt to catch yellow eyes.

Reports from people who say they've been abducted are explored; a Harvard psychiatrist who takes them seriously comes under attack.

CBP finds 142 kilos of coke worth over $7 million in a shipment of avocados in Florida.

For those who choose to live in Port Protection, freedom comes at the cost of isolation.

Reports from people who say they've been abducted are explored; a Harvard psychiatrist who takes them seriously comes under attack.

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.

A currency dog sniffs out thousands in undeclared cash; an aspiring actor can't keep track of the plot; officers arrest a wanted burglar.

An American's trip to Alaska heads south; officers suspect a convicted drug dealer is taking his business north; a ship containing weapons is searched.

Officers stop a father and son packing loads of ammo, but can't find the gun. Meanwhile, the Vessel Search Unit find a suspect sailor on a US tug.

A young man's lies could keep him from his fiancee, while the discovery of a gold bar and lots of cash spell trouble for another traveller.

Scott discovers a totem pole at the legendary Blackfoot Truck Stop in Alberta.

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.

Mexico's gifts to the world include the tomato, the avocado, tacos, tequila, Frida Kahlo, Oscar-winning directors, Mexican wrestling, Latino pop music, silver, rubber, and Mayan astronomy.

A currency dog sniffs out thousands in undeclared cash; an aspiring actor can't keep track of the plot; officers arrest a wanted burglar.

An American's trip to Alaska heads south; officers suspect a convicted drug dealer is taking his business north; a ship containing weapons is searched.

Officers stop a father and son packing loads of ammo, but can't find the gun. Meanwhile, the Vessel Search Unit find a suspect sailor on a US tug.

A young man's lies could keep him from his fiancee, while the discovery of a gold bar and lots of cash spell trouble for another traveller.

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

Three real-world disasters forensically dissected - Deepwater Horizon explosion, the Concorde crash and 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.

When a dam fails, catastrophe follows; history's 10 worst dam failures.

Bear shows Simu Liu how to trigger avalanches, plunge into frozen lakes and traverse alpine terrain as temperatures drop below -20 degrees.

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

When a dam fails, catastrophe follows; history's 10 worst dam failures.

Bear shows Simu Liu how to trigger avalanches, plunge into frozen lakes and traverse alpine terrain as temperatures drop below -20 degrees.

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

Three real-world disasters forensically dissected - Deepwater Horizon explosion, the Concorde crash and 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.

Suspicions about a convicted smuggler uncover a scam; questions are raised when officers stumble upon a suitcase full of meat.

Some engineering students carry out an unusual experiment; officers find a construction worker's story has no foundations.

A jewelry box contains something valuable; a biking teen hits a roadblock; a Thai sailor may be land-locked over computer content; a vagabond musician must prove his worth.

The X-ray machine isn't fooled by aluminum foil wrapping; a truck full of plastic seems like it may have been tampered with.

Scott visits a collector with plenty of outbuildings but soon discovers it has already been picked.

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

From early exploration to cutting-edge technologies, Sweden has helped define the modern world through innovations from Viking ship design, IT, dynamite, Nobel prizes, and the music of ABBA.

Suspicions about a convicted smuggler uncover a scam; questions are raised when officers stumble upon a suitcase full of meat.

Some engineering students carry out an unusual experiment; officers find a construction worker's story has no foundations.

A jewelry box contains something valuable; a biking teen hits a roadblock; a Thai sailor may be land-locked over computer content; a vagabond musician must prove his worth.

The X-ray machine isn't fooled by aluminum foil wrapping; a truck full of plastic seems like it may have been tampered with.

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.

Alaska provides, but the next generation must be able to reap its rewards.

Alaskans must master trapping, fishing, construction and mechanical repair in order to survive.

After aborting his mission last season, lone wolf prospector David Muise returns undeterred and looking for a partner.

The final words of a lifelong gold hunter send Adam, Kru and Daryl Friesen through an icy gauntlet high above Pitt Lake.

The Yukon's Civil Air Search and Rescue Association battles flying conditions in their search for a historic missing plane that had 44 people on board; the Dawson City Fire Department responds to a 911 call that puts the town in jeopardy.

After aborting his mission last season, lone wolf prospector David Muise returns undeterred and looking for a partner.

The final words of a lifelong gold hunter send Adam, Kru and Daryl Friesen through an icy gauntlet high above Pitt Lake.

The Yukon's Civil Air Search and Rescue Association battles flying conditions in their search for a historic missing plane that had 44 people on board; the Dawson City Fire Department responds to a 911 call that puts the town in jeopardy.

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.

A British traveler hopes to turn their back on their failed marriage; officers do a close inspection of a car that may contain drugs.

A foreign student's possessions are full of surprises; an X-ray machine finds a strange shape inside of a container.

A tattoo artist brings the tools of his trade on his vacation; homemade treats conceal a deadly surprise.

A traveler swallows an unknown substance; a Thai vacation guide offers more than holiday advice; a car dealer takes a long road to the truth; hard iced tea and a passenger bring attention to a trucker.

The guys hope to find some great deals to sell out west in southern Ontario.

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.

Dutch inventions and innovators have changed the world, from artists like Rembrandt and Van Gogh to Anne Frank, the first stock exchange, telescopes, submarines, windmills, flowers and gin.

A British traveler hopes to turn their back on their failed marriage; officers do a close inspection of a car that may contain drugs.

A foreign student's possessions are full of surprises; an X-ray machine finds a strange shape inside of a container.

A tattoo artist brings the tools of his trade on his vacation; homemade treats conceal a deadly surprise.

A traveler swallows an unknown substance; a Thai vacation guide offers more than holiday advice; a car dealer takes a long road to the truth; hard iced tea and a passenger bring attention to a trucker.

Dr. Pol and his team handle animal emergencies in Central Michigan.

A cow requires the doctor's assistance.

Dr. Pol needs to take blood samples from a flock of sheep to test for Ovine Progressive Pneumonia, a progressive, incurable and highly contagious disease.

Dr. Pol examines a goat that has been refusing to eat.

No matter the heat, the vets keep cool during multiple intense emergencies.

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.

The Critter Fixer team takes on a wild variety of reptile cases.

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

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

The Critter Fixer team takes on a wild variety of reptile cases.

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

Dr. Pol and his team handle animal emergencies in Central Michigan.

A cow requires the doctor's assistance.

Dr. Pol needs to take blood samples from a flock of sheep to test for Ovine Progressive Pneumonia, a progressive, incurable and highly contagious disease.

Dr. Pol examines a goat that has been refusing to eat.

A driver under the influence risks ending the family vacation; a trip behind the wheel of a borrowed truck raises suspicions.

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.

Two long boarders can't skate over their border exam; A traveler's phony story is exposed; a sailor's got more than pennies in his pockets; a rocker's lifestyle drums up some crucial questions.

The guys go to a 70-mile garage sale in Prince Edward Island that has plenty of treasures and junk.

The truckers battle a massive storm.

Gold, the shiny precious metal that has been cherished through all recorded time, is vital to the modern world; if gold was suddenly stripped away, the technological and cultural world would be left reeling.

A driver under the influence risks ending the family vacation; a trip behind the wheel of a borrowed truck raises suspicions.

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.

Two long boarders can't skate over their border exam; A traveler's phony story is exposed; a sailor's got more than pennies in his pockets; a rocker's lifestyle drums up some crucial questions.

Programming to be announced.

The discovery of gold and silver artifacts in Laos, dating to the early days of the Khmer Empire, leads scientists to investigate how the objects were made; on their journey, they retrace the steps of the ancient kings.

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.".

Ogedei's death triggers a struggle for succession over the largest empire in the world.

Mariana reveals the most intense and unexpected moments from Trafficked.

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

Ogedei's death triggers a struggle for succession over the largest empire in the world.

Mariana reveals the most intense and unexpected moments from Trafficked.

Programming to be announced.

The discovery of gold and silver artifacts in Laos, dating to the early days of the Khmer Empire, leads scientists to investigate how the objects were made; on their journey, they retrace the steps of the ancient kings.

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.

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

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

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

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

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

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

It's all hands on deck as Dr. Michelle Oakley treats canines of all kinds.

In Alaska, winter conditions are tough, but Dr. Michelle Oakley is tougher.

Take a special trip down memory lane, as the entire Oakley family cares for the animals of the Yukon.

In this enhanced episode, shark bites pop up in Long Island.

With bonus content, experts uncover rare winter bites in California.

With bonus content, experts explore a flurry of shark attacks in Australia.

Experts unravel the mystery surrounding Seal Island, where tens of thousands of seals must cross shark-infested waters daily in order to survive.

Scientists investigate the giant tiger sharks of Norfolk Island.

Sharks face off in the ultimate species competition. In 10 nail-biting competitions, we'll prove once and for all which shark is the MVP of the open sea. The great white is favored, but an underdog might just swim into first place.

Scientists conduct a population study on great whites in California.

Whether on the hook or in utero, sharks eat their own and scientists from Australia to Florida use the latest tagging and tracking measures to understand why.

Bertie journeys to South Africa to dive with great white sharks.

Scientists investigate the giant tiger sharks of Norfolk Island.

Whether on the hook or in utero, sharks eat their own and scientists from Australia to Florida use the latest tagging and tracking measures to understand why.

Bertie journeys to South Africa to dive with great white sharks.

Scientists investigate the giant tiger sharks of Norfolk Island.

It's all hands on deck as Dr. Michelle Oakley treats canines of all kinds.

In Alaska, winter conditions are tough, but Dr. Michelle Oakley is tougher.

Take a special trip down memory lane, as the entire Oakley family cares for the animals of the Yukon.

In this enhanced episode, shark bites pop up in Long Island.

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.

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

Young gorilla bids her keeper farewell; baby ferret.

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.

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

Young gorilla bids her keeper farewell; baby ferret.

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.

Asking if female sharks are the ultimate rulers of the oceans.

A fearless team dives in to solve the secret gathering of Maui sharks.

Los Angeles is shocked by four shark attacks in four months.

Hawaii is shaken by three bizarre shark attacks in less than five months.

Ten shark attacks leave visitors reeling off Florida's Space Coast in 2003.

Two unlucky ocean lovers are attacked by sharks twice.

A small Alabama beach town emerges as an unlikely shark attack hot spot.

Three alarming shark attacks occur in the Bahamas in just thirty-nine days.

The remarkable stories of people saved from shark attacks by other species.