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.

In busy waters, Washington's Fish and Wildlife respond to a boating accident victim. Then the officers face a suspect with a dangerous past.

Renowned NFL Running Back and Super Bowl Champion Marshawn Lynch enlists Brett and Wayde to build him the ultimate Beastmode Tank.

Officers from the Pennsylvania SPCA respond to a call concerning abandoned animals. But nothing can prepare them for what they discover inside a kitchen fridge.

When Philadelphia police uncover a massive dog-fighting operation, the Pennsylvania SPCA is called in to investigate, leading to a grisly exhumation in a front yard.

Owners Lisa and Callu are worried about Merlin, a Great Dane who goes over on his front toes when he walks. Neurologist Annette Wessman suspects a problem in his spine or skull.

Billy falls seriously ill and is forced to seek medical help. Meanwhile, the kids are left to fend for themselves and build a large raft to help move lumber.

Scout is so afraid of his tormentor, Caramel, he literally lives inside a kitchen cabinet. Allison's adopted Bengal cat, Cheeto, can use the toilet - but attacks her.

Robert and Indah, a Komodo dragon, participate in an exciting research experiment. Terri tries to save a koala joey with a zero percent chance of survival.

When lesser flamingo eggs and chicks are being preyed upon, the team must make a nerve-wracking decision. Plus, a wallaby and her joey become ambassador animals.

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

Tigger the cat is monitored closely for unusual eating habits. Plus, Dr. Jeff cautions an owner of the perils of buying online when she brings in her unwell puppy.

ATM gets a surprise call from their favourite customer, Shaquille O'Neal. The retired NBA superstar loves his first tank and is back for a second.

When officers raid an illegal cockfighting ring, the quest for justice uncovers a shocking case of deliberate cruelty. But the bird's owner denies any wrongdoing.

In this special edition, join the rookies to discover what it is like learning to fight crime in one of the toughest cities in the US.

Warden Richards races to rescue a cow being attacked by a pack of dogs. At the academy, new recruits wrangle a gator, and anglers are caught illegally fishing.

Dr. Ross and vet tech Kyerra rush to save the life of a stray cat injured by a car engine. And, Dr. Blue treats a 700lb pig who suffers from arthritis.

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!

The team discovers a dog that has been abandoned in a nearby playground in searing heat. And, Lizzy makes an emergency trip to save a dog hit by a car.

A breast cancer survivor tries to move on with her life, but her vicious cat scares off budding suitors. Plus, Feline glutton Gus is an unhealthy eater.

Robert and Indah, a Komodo dragon, participate in an exciting research experiment. Terri tries to save a koala joey with a zero percent chance of survival.

An adventurous puppy falls off a trampoline, can Dr. Jeff and Petra mend its broken leg? Meanwhile, Susan takes care of a litter of kittens and their mum.

Lucas visits Parrish, FL, where a couple request the ultimate space of tranquility and relaxation. Can his crazy crew tap into their inner Zen?

Paul de Gelder and James Glancy bail out of an aircraft at 3500-ft to experience what it's like to crash land into some of the world's most remote and shark-infested waters.

Billy falls seriously ill and is forced to seek medical help. Meanwhile, the kids are left to fend for themselves and build a large raft to help move lumber.

It's the start of hunting season and wardens investigate the illegal shooting of two deer. Then, they swap out bass fish in the Bois d'Arc Lake.

In Texas, Jeremy Sutcliffe and his wife are bitten by a deadly rattlesnake. And, Kent Bonde was spearfishing when he was attacked by a shark in the Bahamas.