Animal Planet HD (Pacific)

Pete descends upon western Washington to make a tree house for action and relaxation; with a 55-foot-long bouncy-bridge entryway into a 20-foot-high structure and a zip line that travels through the forest, this tree house generates non-stop thrills.

Two retirees get a retreat on their 100-acre Wisconsin farm; Pete builds a barnlike birdhouse with three separate pods -- an art studio, an office and a lounge -- complete with a screened-in porch and a deck overlooking their stable of alpacas.

Pete travels to Alaska to build a mountaineering lodge in the shadow of North America's highest peak; constructing an A-Framed masterpiece for the Mt. McKinley Princess Wilderness Lodge with breathtaking views of Denali.

Pete builds an outside-in tree house and installs a sauna in the trees.

Pete and the team travel to Trempealeau, Wis., to build a rustic river shack-themed tree house for two parents who yearn for an easy escape after a long day.

Pete takes on his first international tree house in Norway; working alongside a local builder named Frode, the one-of-a-kind, 24-foot-high retreat accommodates eight and allows for stunning views of the nearby lake.

Sam Brittain and Melanie Croce run Seal Rescue Ireland, the only seal rescue in the entire country; alongside devoted volunteers, they do everything to save and rehabilitate orphaned and injured seals so that they can return to the wild.

After two years of devoted care by Julius, an orphaned baby elephant named Malkia is ready to return to the wild.

A 150-foot-long super snake known as the Yacumama attacks and kills people in Peru; the villagers fear it so much they try to blow up the creature with dynamite.

Investigating a bigfoot-like creature with superhuman strength reported in the foothills of the Andes; Mungo hears chilling yet conflicting stories on the Ucumar: some believe the creature is a bear, while others think it's more of a yeti.

Beloved camel Max develops a large abscess on the top of his head; a marmot prepares for her first classroom visit as an ambassador animal; a peregrine falcon found at the base of a skyscraper is brought to the zoo for a health check.

A 14-year-old otter is not its usual, energetic self; staff at the New York Aquarium move their sharks to a new exhibit; quirky capercaillies need help producing healthy chicks.

Zoo staff face unexpected setbacks weaning a bright sea lion pup off its mother's milk; the bird team steps in to support a rejected curassow chick; a squirrel monkey visits the dentist.

A trio of abandoned puma cubs arrives at the zoo, while the staff grows concerned that Ella, the oldest rhino, is not acting herself; a Caribbean flamingo is born at the zoo after nearly two decades, and Otto the stallion makes his debut.

Needles the porcupine gets a new mate, and the Gaur await their new calves.

It's a series of firsts when the zoo welcomes its first-ever Atlantic puffin chick; Penny the rhino undergoes a series of allergy tests; an endangered species of gecko welcomes its first hatchling.

Seven little blues join the penguin exhibit and are quick to mingle with the rest of the colony; a honey-loving grizzly slows her step, and the staff grows concerned; a turtle can't seem to get along with the alligators; a nyala calf is born.

The staff is hopeful for a successful breeding season when Mshango the giraffe meets the females of the herd; power tools are needed for an Amur tiger's root canal, while Louie the swan falls ill, jeopardizing his release with his partner-in-crime.

A dog is lost during a windstorm; Dr. Baier treats a small bird that has a big personality; a paralyzed dog is abandoned; an alligator is injured in a fight.

Dr. Jeff helps a dog with a serious illness; Mel and her daughter rescue a baby squirrel; Dr. Jeff and Dr. Petra team up to save a beloved cat hit by a car; Dr. Baier gives a rabbit owner a surprise; a tiny dog with a big spirit needs a home.

Dr. Jeff treats a dog with a mysterious injury; Dr. Petra helps vet tech Jes' Dalmatian after it eats something toxic; a neglected turtle needs a new home, and the team falls in love with a litter of stray kittens.

A girl hopes Dr. Jeff can save her puppy from a deadly virus; a stray cat with a life-threatening injury; Dr. Jeff must gain the trust of rescued wolves to help an ailing member of the pack.