Discovery HD

Do dogs feel guilt when they do something wrong? Why don't long-distance flyers get lost? Plus, why are tigers orange? Experts answer these questions and more.

What do dogs see when they watch TV? How do snakes eat prey twice the size of their heads? How are cuttlefish able to vanish without a trace.

Which birds can fly as high as a passenger jet? Why are tiny jumping spiders dancing for their lives? How have West Coast squirrels outsmarted rattlesnakes.

The Secret To A Long Life. How are homing pigeons able to find their way home? How are spiders luring bugs into their trap? How can some fish survive for years above ground.

New science and amazing demonstrations reveal how a lizard can literally walk on water. And, can jellyfish live forever.

A bird expert reveals how a barn owl catches prey it can't even see. And, what makes octopuses masters of disguise.

A dog with a shattered leg and seven bad-tempered chickens arrive at the clinic. And the team unites when a tiny kitten is found unconscious at a construction site.

Dr Nichols treats a cat injured in a fight with the dog next door. And a class of fourth-graders count on Dr Jeff to save their pet hedgehog.

When a dog is rushed into the clinic foaming at the mouth, Dr Jeff must act fast. And when he meets Penelope the Pig, he faces a surgery he's never done before.

The Wolfpack arrives on their new property in the most remote frontier of the lower 48. But the long winter wreaks havoc on the family's attempt to settle in.

The Browns begin an ambitious barn build, the key to Billy's grand vision. Plus, Noah returns, reuniting the entire wolfpack for the first time since Alaska.

Disaster strikes as floods plague the region, and the Browns must balance the fate of their new community with the success of their homestead.

Noah invents an ingenious device to rid their homesite of moles. Billy gives daughter Rain major responsibility as barn construction goes full bore at the ranch.

Ami prepares for a critical medical check-up, but Billy has concerns about progress on the homestead while they're away. A rogue bear destroys Bam's new beehives.

In the season premiere, captains find rare Red Kings in the stormy north. Sig deploys an underwater drone. Jake revives the legendary Cornelia Marie.

Alex builds a wooden soapbox car modelled on a classic 1960s Ferrari. His ambitious design means he needs a little help to get him to the finish line.

Chase Morrill and his team of builders transform a dated cabin into a family retreat. But, snow delays and a tight budget make it a tough job.

Forced to trek two days to a water source, a laid-back hunter and an opinionated adventurer clash in Zambia, risking their 21-day challenge.

Expert chasers self-shoot an encounter with a massive tornado near Gary, South Dakota, but become first responders when it hits an occupied farmhouse.

Phil and Heather explore Spain's haunted Belmonte Castle in La Mancha. Inside, they uncover secrets that reveal the truth behind a legendary figure.

Andrew tests a disturbing theory linking a secret invisible weapon in Venezuela to unexplained attacks on U.S. officials overseas and Havana Syndrome.

Neutron stars are violent phenomena that defy the laws of physics. New discoveries reveal they have the power to destroy planets and even other stars.

Supernovas are the violent death of giant stars. New discoveries reveal how these events create the elements that are essential to all life in the universe.

Paul Sr. and Jr. begin restoring a 1951 Buick together as a way of working on their relationship. Some improvisation causes chaos when they can't find a tool.

Junior designs a futuristic-inspired bike, but struggles to stay on schedule. The OCC team builds a vintage military style bike for a foundation for wounded veterans.

Mike and Elvis take on the 'baby Ferrari' but with a tiny budget. Can the guys make this old school classic car a rival to its Italian cousin.

Mike's gone all nostalgic, buying a 58-year-old Dormobile campervan. But Elvis has a huge amount of work to do on it including a brand-new engine fit.

Mike finds a rare Land Rover Series 1 that may not be all it seems. A simple cosmetic touch-up becomes a complex and pricey restoration.

Mike nabs a Porsche 997 at a bargain price of just £15,000. The catch? It's got an engine with a serious case of bore score. Can Elvis fire it up.

Mike and Elvis try to revive the 'daddy' of British executive saloons: a 1974 Jaguar XJ6. But it's a risky buy: it's not been on the road since 1990.

After years of searching, Mike's found the ultimate '80s hot hatch: the Renault 5 GT Turbo. Can Elvis restore it in time for its new owner's birthday.

A young couple sets out to create their dream treehouse retreat in Northern Georgia overlooking the breath-taking Blue Ridge Mountains.

Any building project is stressful, especially if the build is in the middle of nowhere. A family builds on their 46-acre land by the Smoky Mountains.

The Raney family begin their most ambitious rescue ever. Marty attempts a dangerous river crossing to get expensive gear to the homestead.

One If By River, Two If By Air. Helicopter pilot Eric battles dangerous weather conditions on an aerial supply mission. Plus, Misty and Maciah work on an innovative greenhouse.

With only two weeks left to finish their ambitious self-rescue, Marty races to complete the log cabin. Plus, Matt takes the next generation on gold hunt.

Marty struggles to finish the cliff-top cabin in time. Plus, the family must risk another river crossing to get materials across for a final crucial build.

The Raneys push beyond their limits to finish two cabins, harvest the garden and mount a hunting expedition. This risky project results in a devastating injury.

In the season finale, Tim and Tickle smuggle tariff-free shine by plane into Canada. Mark and Digger turn the law against a moonshine counterfeiter.

Forrest helps rescue animals and cares for a Shoebill. Later, he revisits animals from his past, witnessing their recovery, and more.

The team have taken down big barns, but they've never seen a log home this large. As they dismantle the cabin, the guys discover that it's filled with history.

In the season premiere, captains find rare Red Kings in the stormy north. Sig deploys an underwater drone. Jake revives the legendary Cornelia Marie.

The team races to get a Mercedes wrapped in bright pink for a celebrity client. And Dean gets a surprise when he visits a collection of classic Porsches.

Powerhouse Coach builds one of the greenest RVs on earth. Colorado has the toughest Unimog, and $2.4 million buys chic style from Featherlite Vantare.

The team at Marathon Coach builds their most challenging RV to date. Four unique RVs cover the spectrum from extreme luxury to off-road warrior.

Senior designs a throwback brand of affordable motorcycles, to sell out of the OCC Showroom. Plus, Junior builds a bike using multiple aluminium parts.

SPLAT! OCC builds an aggressive paintball bike, but Senior and Josh clash over creative. Meanwhile, Junior designs a farm-inspired bike with a surprise element.

Find out how CO2 cartridges, pretzels, scissor lifts and skating rinks are produced, as more everyday items are put under the microscope.

Find out how pro hockey sticks, treadmills, baby shoes and handheld computers are made, as more everyday items are put under the microscope.

Pete and his gang cook up a dining room treehouse for a French restaurant. Surrounded by fields, the aim is to bring the Provence countryside to guests.

Pete and the crew channel Frank Lloyd Wright for a triple-decker treehouse by Lake Barkley in Kentucky - it will offer a bedroom, kitchen, bathroom and more.

Parker Schnabel heads deep into the jungles of Guyana, South America, to chase a 21st-century gold rush. There he learns ingenious local techniques.

Parker prospects in Serra Pelada, the site of Brazil's biggest gold rush. It's produced five billion dollars' worth of gold and is rumoured to hold trillions more.

A creative family builds a custom home where the mountains and desert collide in Colorado's last frontier. The dream project quickly turns into a hard job.

Joey Caiafa takes on a dream project of building a cabin in Colorado. With the help of his friends, he builds a cabin suited for the ultimate outdoorsman.

Hyena brothers are moved into the lions' habitat. Plus, the staff are ecstatic when a zebra shows signs of pregnancy and Mabel the pygmy hippo welcomes a calf.

The staff develop an innovative course of treatment when a cheetah has an injury. Plus, the zoo hosts the only pair of platypuses outside Australia.

How do they collect the trash in road-free Venice? How do they make Australia's famous sheepskin boots? And, how do they turn pond algae into a health supplement.

How do they turn rosebuds into Turkish Delight? How do they hammer out a silver spoon? And, how do they make sunscreen to block out harmful UV light.

How do they create the world's finest canvases? How do they cook up foul-smelling stinky tofu? And, how do they get fifty drinks out of a single bottle of beer.

How do they look after bees to make millions of jars of honey? How do they build a trike to carry the whole family, and how to stop a bullet with a sheet of ceramic.

Misty must complete her cabin roof without help from Maciah. Marty gives a cabin-warming gift to Mollee, and the family commit to a mini rescue.

With the first winter storm just days away, the Raney clan rush to seal in Misty's cabin. But a devastating fire threatens to derail their plans.

The boys desperately want to buy policeman Jordan his dream car, a Subaru Impreza. Elvis surprises Mike as he dips into his contact book to buy a kit car.

Potter Rich makes a lighthouse lantern for a heroic life-saving vicar using a tricky piercing technique. Saf and Yas team up to craft a beautiful copper music stand.

Chase and his team revive the family's dilapidated army bunkhouse. With a $20,000 budget and reclaimed materials, they race to finish before the reunion.

The team goes to England to explore Chillingham, Britain's most haunted castle. Thousands died in the dungeons or in brutal battles on its grounds.

Phil and Jess travel to Ireland and the UK to investigate a centuries-old secret society whose members were known to practice satanic worship and ritual sacrifice.