The residents of Port Protection work together to make improvements in their community.

As the Arctic winter approaches, residents of Port Protection must survive at all costs.

Danger lurks around every corner for Port Protection residents; Mary Miller hunts deer while being menaced by wolves; Curly Leach contends with grueling weather; Gary Muehlberger faces violent seas to fill his freezer with fish.

The residents strive to make a runway safe, teach survival tactics, hunt to stockpile food and deal with the aftermath of a brutal accident.

During the heart of winter, Alaskans face unforeseen challenges in a dog-sled race, alter their strategies for hunting on the tundra and break through a wall of ice on the Yukon River.

Early melting ice forces inhabitants to move their camp out of danger; the residents teach critical survival skills, stockpile resources and brave the uncertain tundra to transport a key piece of equipment.

The northern residents handle the melting tundra as they gather a new food source, take advantage of flowing water to hunt geese and prepare for the breakup of river ice.

Those living off the grid must use the warmth and open waterways to harness vital resources, hunt for waterfowl, gather a spring delicacy for an indigenous tradition and harvest animals from a canoe.

The Alaskans use daylight to secure needed resources and repair vital equipment before the freeze; they embark on an annual fish harvest and see an attempt to lessen dependence on fossil fuels.

Alaskans maximize the 22 hours of sunlight each day to prepare their homesteads, fix equipment, protect their surrounding ecosystem and secure resources for the coming winter.

During summer in Alaska, the inhabitants convert an outdated snow system into a useful water reserve, beachcomb the coastline to discover ancient relics and build a new dock on the river.

As summer continues in the Arctic, Alaskans work to stockpile resources and explore remote terrain; in Kavik, caribou have arrived, and Sue Aikens jumps at this new hunting opportunity on the tundra, while Jessie Holmes embarks on a major move.

Alaskans seize the last of summer's daylight to prepare for the return of winter's fury.

Alaskans must hunt and gather necessary resources to prepare for the upcoming winter.

To find out why sharks are drawn to Hawaii's volcanoes, Dr. Mike Heithaus and Dr. Frances Farabaugh free dive with one of the most dangerous sharks.

Shark attacks in the Red Sea as part of a trend worldwide.

Scientists reveal the unseen lives of white sharks hunting other sharks.

Matt's pain from his 20 year old lost limb is solved.

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Animals fight over food, sex and territory; zebras, gelada monkeys, honeybees, and others use every weapon at their disposal to emerge victorious.

A maniacal stoat hypnotize its prey; a parasite turns its prey into zombies.

Predators evolve specific weapons that make them efficient killing machines.

A polar bear, great white and crocodile display their differing hunting strategies on unsuspecting prey as some of the worlds ultimate predators.

Species that use teamwork to take down their prey.

Examining the deadly world of the most armed and dangerous gangsters, assassins and con artists of the animal kingdom.

Creatures that may look cute and cuddly, but when threatened, challenged or hungry can morph into spine-chilling killing machines.

Feudal families, monarchs and territorial clans of the animal kingdom.

Covert assassins of the animal kingdom who possess the skills to kill: speed, stealth, agility, patience and weapons.

Spring is in full swing in central Michigan, and the veterinarians are busy with babies.

Dr. Pol and team rush to get their patients healed before the Isabella County Fair.

When a massive flood strikes Michigan, humans and animals alike reel from the devastating effects, making it a wet and wild week for the vets.

The clinic sees a slew of interesting cases, from lightning strikes to cat fights.

Dr. Emily goes into labor three weeks early, leaving Dr. Pol and Dr. Brenda to man the busy clinic without her.

The vets of Pol Veterinary Services deal with ornery ungulates, cut colts, knobby knees and more.

From wrangling wild alpacas to rolling stubborn heifers, the veterinarians have a busy week.

The staff and animals rejoice as the long and frigid Michigan winter finally comes to an end.

Covert assassins of the animal kingdom who possess the skills to kill: speed, stealth, agility, patience and weapons.

Feudal families, monarchs and territorial clans of the animal kingdom.

Creatures that may look cute and cuddly, but when threatened, challenged or hungry can morph into spine-chilling killing machines.

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

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

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

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.

In Costa Rica, Dr. Oakley handles a pair of jaguars and a sloth in heat.

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.

Dr. Oakley treats an electrocuted sloth and releases rescued animals back into the wild.

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

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

Dr. Oakley competes in a rodeo and treats a dog with persistent nosebleeds.

Drs. Nicole and Brenda face a surge of feline cases.

After 40 years in business with five vets in rotation, Pol Veterinary Services is a well-oiled machine; when three vets have the day off, it is up to the veteran vets to take the helm.

Winter weather doesn't deter Pol Vet's team of dedicated docs.

The docs battle freezing conditions to make sure their patients are healthy and safe.

There is no time to waste when a playful pup breaks its leg; a duck comes down with diarrhea; and a chihuahua starts honking like a goose.

Curious happenings abound at the clinic.

Dr. Pol and his staff are used to busy days, and today is no different.

It's a busy week at Pol Vet, but with Christmas right around the corner, spirits are high.

It's Halloween, and clients are dressed up in costumes.

Helping a dog that was hit by a car.

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Monkeys season their food, lemurs whiff cologne and bees let out warning screams.

Attend a crabby shell swap, meet a chimp's pet and size up an otter kidnapper.

Steal meals with frigate birds, visit a warthog spa and crack an elephant code.

Follow a fishy hygienist, examine a monkey's tools and cozy up to affectionate giraffes.

Penguin mates prepare to become surrogate parents; a treasured white rhino trains for its next adventure; a moray eel visits the vets.

A surprise birth shocks the zoo, and a pony develops a mysterious mass.

A manatee faces steep odds; vets fight to help Florida panthers.

Trouble brews in the rhino family as a new father deals with horn problems.

It's date night for the African elephants; a shoebill couple hopes for its reunion after years apart; a tortoise develops a mysterious limp.

The ZooTampa team has its hands full with critical manatees; a young nyala undergoes a messy procedure; a nervous cockatoo needs a beak trim.

Love is in the air for a koala couple; painted dogs join a new pack.

Cutting edge care brings hope to an African penguin and a beloved anteater.

The ZooTampa animal care team performs a life-saving procedure.

ZooTampa rolls out the red carpet for new arrivals, big and small.

A clouded leopard mystery, two new giraffes and a growing binturong family.

As ZooTampa prepares for a birth, an orangutan mama breaks all the rules.

Upgrades are underway in Florida Wilds; a rhino makes new friends.

The ZooTampa animal care team performs a life-saving procedure.

Cutting edge care brings hope to an African penguin and a beloved anteater.

Love is in the air for a koala couple; painted dogs join a new pack.

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Scientists conduct a population study on great whites in California.

Two of the deadliest predators go head to head.

Sharks show up in unexpected places in what seems like a global invasion.

The team investigates why Maui is Hawaii's shark encounter hotspot.

The team investigates a beach known as the shark bite capital of the world.

A rash of rare shark attacks in the Gulf spark a major investigation.

Shark diving is a popular activity in the Bahamas, but after several incidents, tourist safety is called into question; experts investigate how human interaction affects shark behavior.

Encounters off Oahu spark investigations into tiger shark hunting patterns.

The team goes to California to investigate and study the rapidly growing population of great white sharks.

The staff relaxes for Independence Day.

The Isabella County Fair brings animals to the clinic for last-minute checkups.

It's one of the hottest summers on record, and the sweltering heat is taking a toll on both Dr. Pol and the local farm animals; a newborn calf with pneumonia, a stubborn pig gives birth.

Spring fever strikes as the team deals with triple-booked appointments; Dr. Brenda takes on a cow that weighs a ton.

The staff seeks additional help after being inundated by a constant stream of clients and calls.

A dog really does eat homework; a horse rapidly loses weight; a tornado warning forces all the animals and staff into the basement.

Horses are vital to communities and it is up to Dr. Pol and his team to keep them healthy.

A bat gives the Pols a rabies scare.

Dr. Oakley treats walking-and-breathing issues for a horse, tries to save a fox in peril, and performs surgery on a puppy.

Dr. Oakley investigates what's ailing reindeer at the Alaska Wildlife Conservation Center.

Dr. Michelle Oakley teaches her daughter Sierra how to work with both house pets and wild animals by performing a checkup on a 100 pound puppy and treating an orphaned bear with a raspy lung.

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The docs at Critter Fixer remove record-breaking kidney stones from a dog.

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.

The docs at Critter Fixer help a laboring bulldog and an aquatic axolotl.

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

A team of doctors searches for answers to save a clouded leopard's life.

The Florida team nurses orphan manatees; a young primate learns the ropes.

Triumph turns to concern after the historic birth of red wolf pups.

A rescued panther inspires a field expedition to improve wildlife safety.

A newly arrived female tiger learns the ropes and overcomes her fears.

Zoo keepers prepare for a chimp birth, while vets investigate a bear's mystery illness.

A gorilla has emergency surgery, while zoo keepers try to take blood from a lion's tail.

Zookeepers prepare for the birth of a white rhino; two young lions leave the pride.

The zoo hopes for a polar bear pregnancy; two endangered red wolves go on a blind date; a young elephant gets some unusual treatment.

Dr. Oakley helps a horse with a strange lump and deals with a bull that's losing weight.

Dr. Oakley and her daughters, Maya, Sierra, and Willow, travel to the AWCC, where they attempt to bond with a lone wolf.

During mating season in the Yukon, Dr. Oakley is busier than ever.

Matt's pain from his 20 year old lost limb is solved.

Even if YOU do everything right to protect yourself, company and institutional data breaches are out of your control. Nearly 1 out of 4 US consumers have been a victim of identity theft. Find out how LifeLock can help protect your identity.

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Aim for harmonious coexistence in spots where human and shark worlds collide.

Drop in at a pit stop for great whites and search for a north-south connection.

Contemplate shark community hierarchies and discover how they socialize.

Take a deep dive to find out what bull sharks and great whites do after sunset.

Hunt for signs of mating sharks and get a peek at their hidden pupping grounds.

Go on a risky tagging mission and get a 360-degree view of feeding hot spots.

In Port Protection, learning to live alongside Mother Nature is the only way to survive.

As residents of Port Protection prepare for winter, old tools and new skills are vital.

Residents of Port Protection must work together to prepare for the cold winter ahead.

Port Protection's residents must adapt to the will of the forest and the sea to survive.

With winter looming, Port Protection's residents prepare themselves for harsh times.

Winter has arrived in Port Protection, and residents struggle to survive the elements.

Port Protection's dwellers use old methods and tenacity to survive the midpoint of winter.

Residents of Port Protection undertake arduous tasks to ensure their winter survival.

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

Gary Muehlberger is clamming at night and keeps a big fire going to deter the wolves from getting too close; everyone is getting ready for the harsh winter that's on the way.

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.

The team goes to California to investigate and study the rapidly growing population of great white sharks.

Shark diving is a popular activity in the Bahamas, but after several incidents, tourist safety is called into question; experts investigate how human interaction affects shark behavior.

The team investigates a beach known as the shark bite capital of the world.

Matt's pain from his 20 year old lost limb is solved.

Even if YOU do everything right to protect yourself, company and institutional data breaches are out of your control. Nearly 1 out of 4 US consumers have been a victim of identity theft. Find out how LifeLock can help protect your identity.

Regain independence and enjoy greater mobility with the compact design and long-lasting battery of portable oxygen.

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