National Geographic (Canada)

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.

The docs at Critter Fixer help their first capybara and an alpaca farm.

The docs at Critter Fixer move quickly to save a canine bitten by a snake.

The docs at Critter Fixer take Vet for a Day to the Zoo Atlanta.

The docs at Critter Fixer help their first capybara and an alpaca farm.

The docs at Critter Fixer move quickly to save a canine bitten by a snake.

The docs at Critter Fixer take Vet for a Day to the Zoo Atlanta.

The Docs at Critter Fixer attempt to remove an egg from a cockatiel.

The docs at Critter Fixer attempt to MacGyver a turtle's broken shell.

The Docs at Critter Fixer provide inspiration to animals and humans alike.

The docs get up close and personal with venomous snakes, help a dog whose face droops, and send a diabetic canine on the road to recovery.

Darrell Ward faces a trail known as "the obstacle course"; Todd Dewey strives to clear a melting ice bridge; Alex Debogorski hauls an oversized fuel tank; Art Burke stumbles onto an ice crossing in the middle of the night.

The fundamental creation of the wheel helps shape the human experience, but if the wheel suddenly stopped working and society lost the greatest, game-changing accomplishments made using wheel technology, the world would be vastly different.

Darrell Ward faces a trail known as "the obstacle course"; Todd Dewey strives to clear a melting ice bridge; Alex Debogorski hauls an oversized fuel tank; Art Burke stumbles onto an ice crossing in the middle of the night.

The fundamental creation of the wheel helps shape the human experience, but if the wheel suddenly stopped working and society lost the greatest, game-changing accomplishments made using wheel technology, the world would be vastly different.

As winter tightens its icy grip, the small, isolated community of West Dawson finds itself completely cut off from emergency services. Alone, Ray faces a string of dangerous solo vehicle retrieval missions on a storm-battered highway.

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

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

David Blaine journeys to India, the birthplace of much of magic, to explore belief and performance through the lens of magic.

In a country once divided by apartheid, South Africa is witnessing how magic breaks down social barriers and changes people's perspectives.

In Japan, David meets masters who spend a lifetime refining a single skill.

Enslaved warrior Spartacus rises as a gladiator to lead a revolt against Rome.

Spiculus, Nero's champion gladiator, rises to fame amid Roman combat games.

Marcus Attilius, citizen-turned-gladiator, fights for survival in Pompeii.

Beast hunter Carpophorus rises in Rome's Colosseum, but at a brutal cost.

Rome watches in horror as Commodus, mad with power, becomes a gladiator.

Gladiator Flamma rises from Syrian soldier to arena legend in Sicily.

Europa, an icy moon of Jupiter, is 485 million miles away from Earth, and it may be the best hope for finding alien life in the solar system; explorers and scientists are planning a trip to Europa to answer questions about extraterrestrial life.

Rome watches in horror as Commodus, mad with power, becomes a gladiator.

Gladiator Flamma rises from Syrian soldier to arena legend in Sicily.

Europa, an icy moon of Jupiter, is 485 million miles away from Earth, and it may be the best hope for finding alien life in the solar system; explorers and scientists are planning a trip to Europa to answer questions about extraterrestrial life.

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

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

David Blaine journeys to India, the birthplace of much of magic, to explore belief and performance through the lens of magic.

In a country once divided by apartheid, South Africa is witnessing how magic breaks down social barriers and changes people's perspectives.

Officers question a man from Texas who arrives with his hunting equipment.

A Dutch woman with a lot of luggage claims she's on a four-day holiday; a Chinese parcel contains a shocking surprise; actor Corey Feldman shows up.

An angry businessman hides the real reason for his hostility; officers try to process some unusual Mexican migrants.

Officers drill an American oil worker with a shady past; a British traveler's proposed reunion with a girlfriend could be cut short.

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

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

Big Al gets off to a great start as the gold mining season begins, while Bernie struggles with a rookie crew and Ken suffers mechanical difficulties.

Officers question a man from Texas who arrives with his hunting equipment.

A Dutch woman with a lot of luggage claims she's on a four-day holiday; a Chinese parcel contains a shocking surprise; actor Corey Feldman shows up.

An angry businessman hides the real reason for his hostility; officers try to process some unusual Mexican migrants.

Officers drill an American oil worker with a shady past; a British traveler's proposed reunion with a girlfriend could be cut short.

CBP finds an SUV loaded with meth; AMO seizes nearly 2000 kilos of cocaine.

CBP seizes $500K worth of coke; HSI arrests an importer of illegal pills.

CBP and HSI track 25,000 ecstasy pills bound for Philadelphia from Germany.

CBP finds 100 kilos of coke in a banana shipment bound for a Philly bodega.

CBP detains a man suspected of swallowing drugs; AMO agents find $51 million of coke.

LA HSI executes undercover drug buys; CBP intercepts Coyotes at the border.

SD HSI follows a loaded car; CBP and HSI test out a drug detection device.

A long winter forever changes the paths of Port Protection's residents.

Squibb and Troy repair a sinking float that could cause a massive oil spill.

A long winter forever changes the paths of Port Protection's residents.