National Geographic (Canada)

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

The docs help unusual critters in the clinic and in the field.

The docs lean on their vet techs to save a beloved sick chicken, help a giant schnauzer, and acclimate some wild bass to a new home.

The docs see a goat with severe bloating, a boa constrictor that refuses to feed, and a turtle infected with parasitic "vampire worms.".

The Docs at Critter Fixer treat a rescued pigeon with a surprising injury.

Rookie Steph Custance tries to complete the first ice road mission of her career; Alex Debogorski runs into a road block as temperatures soar; Art Burke attempts to deliver to a new community; Darrell Ward braves an unregulated winter road.

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.

Rookie Steph Custance tries to complete the first ice road mission of her career; Alex Debogorski runs into a road block as temperatures soar; Art Burke attempts to deliver to a new community; Darrell Ward braves an unregulated winter road.

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 guys look through a hangar-sized collection; Henry's retro service station.

Finland's impressive defence in the Second World War and the nuclear age.

How Britain defended itself from invasion for nearly a thousand years.

The story of Poland's survival, against all the odds.

The story of the Netherlands' most powerful defence - water.

Whistleblower testimony reignites a decades-long fight for transparency.

Commercial pilots come forward about their encounters with UFOs.

Scientists unveil cutting-edge technology helping in the search for UFOs.

People talk about close encounters they've had with UFO phenomena.

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

No longer waiting for the government to share data, citizen scientists and private groups amplify the search for answers.

Chris turns to longevity doctor Peter Attia to find out how changing his eating habits can help his quest for longevity. Ironically, the answer is to eat no food at all for four days, which will unlock his body's own anti-aging powers.

Can Chris stop playing it safe and rediscover the joy of taking risks?

No longer waiting for the government to share data, citizen scientists and private groups amplify the search for answers.

Chris turns to longevity doctor Peter Attia to find out how changing his eating habits can help his quest for longevity. Ironically, the answer is to eat no food at all for four days, which will unlock his body's own anti-aging powers.

Can Chris stop playing it safe and rediscover the joy of taking risks?

The story of Poland's survival, against all the odds.

The story of the Netherlands' most powerful defence - water.

Whistleblower testimony reignites a decades-long fight for transparency.

Commercial pilots come forward about their encounters with UFOs.

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

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

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

An old map connected to testimony from an 1891 eyewitness account of Slumach's hanging sheds light on the legend.

Conservation Officer Logan has a close call while investigating a case of poaching; an aggressive grizzly bear ransacks a remote trapper's cabin.

Glass brought light into homes and put the world into focus; people use glass to protect ourselves, cure disease, and create artistic masterpieces.

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

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

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

An HSI stakeout leads to nearly $500,000 of meth and fentanyl in San Diego; CBP finds concealed cash and a carload of cocaine at the El Paso border.

PR AMO team hunts down boat loaded with $41 million of coke; CBP gets a tip about money smugglers and finds cocaine and people inside car trunks.

HSI performs an undercover drug sting; CBP finds cocaine in Rio Grande Valley.

CBP's K9 sniffs out hidden cash; HSI intercepts a $2 million drug deal.

CBP in JFK and HSI in San Diego tackle fentanyl crisis on opposite coasts.

HSI partners with Colombian National Police to dismantle illegal gold mining operations; CBP thwarts cartel activity in Texas.

HSI money laundering stings; CBP's largest drug seizure in LAX history.

The residents of Port Protection build a life-changing tool.

PR AMO team hunts down boat loaded with $41 million of coke; CBP gets a tip about money smugglers and finds cocaine and people inside car trunks.

The search for crab takes residents into a dangerous new environment.

The residents of Port Protection build a life-changing tool.

In this enhanced episode, AMO Puerto Rico finds cocaine on a ferry.