Shark experts Brandon McMillan and Jimi Partington return to Guadalupe Island to search for the largest great white in the world, Deep Blue. Can they unravel the mystery?

The Raneys help a family struggling to survive in their home made of 30,000 tire bales. They are battling intruding pests, flooding, and unstable walls.

A wild penguin receives treatment for a life-or-death wound. Two home-pen inhabitants get into a fight and one of the residents celebrates a special occasion.

The odds are stacked against an undersized chick. At almost four months Little Bluey weighs just over a kilo. The team do all they can - but will it be enough?

Antonio transforms a cramped condo for two cats and a rescue dog. His team builds personalised spaces into the furniture, and install a 20 ft climbing wall.

It's the start of deer and oyster season in Texas. Game Wardens Chelsea and Ben come across a young crew with a large number of oysters and an owl is rescued.

The Browns raise the defences when they find grisly evidence that a new predator is stalking the ranch. And, Gabe builds an apartment for him and Raquell.

The family join a competitive pheasant hunt ahead of Thanksgiving. Then, Billy and Ami surprise the siblings with new additions to the homestead.

Why do domestic cats find it so hard to get down from trees, and how have two jungle cats evolved? Plus, why do kiwi birds lay huge eggs for their size?

How do caterpillars transform into butterflies in their cocoon? Plus, why are cats' tongues the way they are? Experts answer these questions and more!

When a husky with a deep wound on its neck is rescued, Pennsylvania SPCA vet Dr Rachel Lee is determined to save him.

This special episode of Animal Cops Philadelphia exposes America's puppy mills: large scale commercial breeding kennels where standards are poor.

A dog is brought in with its hair so matted it can hardly see, and a man is suspected of violence towards three cats.

Behind modern Dubai lies a hidden treasure - an incredible wildlife that speaks of a timeless connection to the desert, the sea and the history and tradition of its people.

Bradley and Billy are in southern California to find a super predator, the sugar glider. These marsupials are the dominant predator for their size.

The guys are in Mpumalanga, South Africa, searching for the Cape mole-rat. They have giant, razor-sharp teeth and is known as the 'king of the underground'.

Dr Jeff examines a beloved Weimaraner who's stopped eating and makes a surprising discovery. Plus, a servicewoman brings in her pit bull who has an injured leg.

Jeff and his team head to a remote town where they encounter an unexpected animal. In Denver, Dr Amy treats a kitten with a mysterious injury.

Wes and Robert remove eggs from the nest of dangerous saltwater crocs Terra and Bosco. Meanwhile, Bindi tends to the training of otters Percival and Daisy.

The family make their annual trip to the Steve Irwin Wildlife Reserve to study wild crocodiles, and continue the mission started by Steve.

The staff are concerned when a beloved African penguin falls mysteriously ill. Then, the aquarium witnesses the annual spawning of an endangered coral species.

Tania heads to California to pick up a former VRC dog whose adopter has died, and after being rescued, a badly injured puppy is discovered to be a missing pet.

One owner puts his badly-behaved cat in 'kitty jail' and a problem feline leaves bowel movements and shredded furniture in her wake. Can Jackson Galaxy help?

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!

Pete goes to Walden, NY to build a treehouse tasting room for Angry Orchard. The pavilion-style structure will give views high above the acres of apple trees.

Forrest returns to his childhood home in Zimbabwe searching for the extinct Cape lion after numerous sightings of a similar size lion with a black mane.

The boys have the coveted task of creating a temporary tank for NBA star, Dwyane Wade, as he launches his new shoe line. But will he be pleased with the results?

ATM create two connecting tanks that total nearly 250,000 gallons of water for an aquarium attraction where visitors can dive with sharks.

Wayde and Brett build a tank for worldwide internet sensation Henri the Cat, and a 1500 gallon aquarium into the restaurant ceiling at the Royal Blues Hotel.

It's fall in the Arctic National Wildlife Refuge and that means the caribou are migrating. Plus, a bear ransacks a cabin, creating a food shortage.