The wardens of Region 1 and 3 set off to educate the public on Montana's aquatic invasive species population. Meanwhile, a tribute is made for one of Montana's honorary wardens.

In western Montana, wardens navigate a dispute over a dead elk stolen by a grizzly; in region two, they investigate the unlawful shooting of a female elk, uncovering key details.

Region 1 wardens are left speechless after witnessing a squatter on public land and are on high alert during the annual Yellowstone River Boat Float; during the pursuit of an upland game, a license check comes up empty and the wardens scramble.

During Montana's antler shed hunting season, the wardens are kept on their toes while locating bears, mountain lions and lost hunters; warden Bryan Golie questions an angler in search of the truth.

The wardens of Region 1 and 3 set off to educate the public on Montana's aquatic invasive species population. Meanwhile, a tribute is made for one of Montana's honorary wardens.

The Washington DFW police take on an illegal elk shooting, a suicidal citizen and convicted felons looking to poach.

Bear near family home is taken on by the FWP's bear dog unit; interstate is disrupted by unstable woman; fisherman hooks endangered fish; tribal crabbers trap out of season.

A mystery illness afflicting Ceelo the Doberman puppy has the entire RAPS vet team in detective mode; Cardamom, a Shar Pei puppy, demonstrates why cute can be complicated; the pickers uncover a royal treasure in one of the abandoned bins.

A dog named Goobs wins the RAPS team's hearts; Shadow, a Pitbull mix, has a potentially cancerous lump on his neck; Lilou the cat gets a diagnosis to explain her aggressive and unusual behavior; Karen and her team of pickers hit a jewelry jackpot.

Antonio and his team design and build an elaborate system of tunnels and towers spanning two rooms for a family and their seven chinchillas.

A couple wants their savannah cat and foster kittens to safely enjoy the outdoors; Antonio's solution is to build an intricate system of outdoor catwalks and double-decker enclosures with cat-friendly plants, natural climbing surfaces and toys.

Police rescue a turtle caught on fishing line, and it's up to Dr. Ross to unhook him; Dr. Blue waits for test results after performing dental surgery on a loveable dachshund; Dr. Lavigne gives a stray cat first-class treatment.

Injured elephant Man-Jai needs emergency tusk surgery; massive clean-up operation begins for a family of hippos; bent beak jeopardizes a couple of penguins; strange resident gets VIP treatment.

Bindi and the family plan an emotional surprise for Terri in the Crocoseum; Robert helps the zoo's three new adorable tiger cubs.

Tia takes a new rescue to the vet and receives heart-wrenching news; community rallies to raise funds for Earl's surgery; Mariah must conquer her greatest fear when an adopter with an unique challenge arrives.

Single dad hopes to find pit bull companion for himself and his son to fill gap left by painful break-up; Mariah and Toney rescue puppy that needs surgery to walk.

R&B singer Keyshia Cole dreams of having a saltwater aquarium in her home, and Wayde and Brett endeavor to make her dreams come true.

California restaurant Mel's Drive In wants a tank for their new location in Santa Monica; the owners want a nostalgic feel and a ton of insert pieces that represent Mel's storied history while pointing to the restaurant's future.

Brett's newest business venture is Donut Mania, and Wayde and the whole team want to congratulate him with a surprise fish tank.

Businessman Brad Jennings builds a new office and wants to top it off with three tanks from ATM; Wayde and Brett must come up with three complementary interiors including one with a working fireplace.

Three-time world champion boxer Fernando Vargas asks Wayde and Brett to make a boxing glove-shaped tank for his boxing gym in Las Vegas; this challenge goes well beyond the ring.

Mike heads to South Australia to extract deadly, venomous brown snakes from people's homes MacGuyver style with a pillowcase, a few unorthodox makeshift tools and his man-hands.

Mike travels down the Adelaide River in a bid to capture one of Australia's deadliest creatures, the crocodile.

Mike heads to the edge of the Arctic Circle on the northeast side of Canada's Baffin Island to find one of the most enigmatic species of shark - the Greenland shark.

Mike learns how to make high quality bird food in Payette, Idaho, and then milks spiders for their venom in Arizona.

Mike heads to South Australia to extract deadly, venomous brown snakes from people's homes MacGuyver style with a pillowcase, a few unorthodox makeshift tools and his man-hands.

Mike travels down the Adelaide River in a bid to capture one of Australia's deadliest creatures, the crocodile.

Mike heads to the edge of the Arctic Circle on the northeast side of Canada's Baffin Island to find one of the most enigmatic species of shark - the Greenland shark.

Mike learns how to make high quality bird food in Payette, Idaho, and then milks spiders for their venom in Arizona.

California restaurant Mel's Drive In wants a tank for their new location in Santa Monica; the owners want a nostalgic feel and a ton of insert pieces that represent Mel's storied history while pointing to the restaurant's future.

Brett's newest business venture is Donut Mania, and Wayde and the whole team want to congratulate him with a surprise fish tank.

A stray dog arrives at RAPS in rough shape and the team uncovers his surprising story; William, a street-wise cat, amazes Dr. Maldonado with his resilience; Odin, a German Eurasier, heads into surgery; Karen is handed a huge picking challenge.

A black cat with breathing problems gives the vets a run for their money; Bucky, a senior Labrador, takes a frightening turn during surgery; Lucy the Hedgehog surprises her owner with undetected health issues.

Antonio transforms an overgrown backyard into a beach-themed oasis for humans and rescued rabbits, complete with predator-proof enclosures.

Antonio goes hog wild and designs the ultimate piggy paradise with a new pig house, a mud pit, space to run and an activity wall to keep Mr. Pickles happy.

A chicken is rushed to Dr. Ross after being attacked by a coyote; a Great Dane mix has a seizure; Dr. Lavigne uncovers multiple issues; a surprise serenade at the clinic musically inspires Dr. Blue.

Orangutan Malu destroys his playroom; an elderly horse must undergo a dangerous procedure; keepers must decide if it's time to say goodbye to one of the zoo's giraffes.

After historical wildfires rip through Australia, the Irwins race to rescue as many animals as possible; Robert and Terri jump in to help the severely injured koala population; Bindi and the wildlife hospital rescue hundreds of baby flying foxes.

Hurricane Katrina survivor finally, after ten years, has a chance at getting a forever home; Louise and Matt find much more than the loose pit bull they were looking for.

Local shelter fights Tia over the fate of a scared and violent pit bull; local couple hopes to find friend for the family dog; after long recovery, dog rescued from near death has chance at forever home in Boston.

Jeremy heads to Australia to investigate a terrifying underwater attack by a six-foot beast in a remote Outback river.

A recent sighting in South Africa of a half-human, half-fish beast draws Jeremy Wade into the story of a creature with ancient origins and a fearsome reputation.

After numerous credible eyewitness accounts of the Tasmanian Tiger in Australia, James Cook University has researchers on the move; Forrest joins their study before heading deep into the Cape York Peninsula.

Madagascar's Pachylemurs were red, furry giants, nearly the size of great apes; recently discovered remains disprove that they went extinct 1,000 years ago; Forrest tries to prove the giant species still lives.

Forrest teams up with a specialist in Newfoundland in search of a predator that was declared extinct in 1930; the duo meets with a hunter that shot what is believed to be a wolf and uncovers evidence that suggests the species could be alive.

On a family trip to Pattaya, Thailand, Helen Costigan attends an elephant show when one of the massive beasts turns deadly; golf ball recovery specialist Scott Lahodik is diving in a Florida lake when he's attacked by a vicious alligator.

Bob Legasa is hunting in Montana and what he thinks is a bluff charge from a grizzly bear is, in fact, a near-lethal attack; while canoeing in Zimbabwe, Kristen Yaldor is thrown into the water and finds herself in the jaws of a hippopotamus.

During an archery hunt in Cranbrook, British Columbia, Chad Dueck comes face-to-face with a mother grizzly bear; in Tracy, Calif., Walt Dean King is savagely attacked by a Brahma Bull roaming his neighborhood.

While vacationing in South Africa, Peter Knottenbelt suddenly finds himself in the jaws of a massive crocodile; in Nova Scotia, Meg Doyle is walking her beloved dog when they're suddenly ambushed by a pair of angry raccoons.

On a family trip to Pattaya, Thailand, Helen Costigan attends an elephant show when one of the massive beasts turns deadly; golf ball recovery specialist Scott Lahodik is diving in a Florida lake when he's attacked by a vicious alligator.

Bob Legasa is hunting in Montana and what he thinks is a bluff charge from a grizzly bear is, in fact, a near-lethal attack; while canoeing in Zimbabwe, Kristen Yaldor is thrown into the water and finds herself in the jaws of a hippopotamus.

During an archery hunt in Cranbrook, British Columbia, Chad Dueck comes face-to-face with a mother grizzly bear; in Tracy, Calif., Walt Dean King is savagely attacked by a Brahma Bull roaming his neighborhood.

While vacationing in South Africa, Peter Knottenbelt suddenly finds himself in the jaws of a massive crocodile; in Nova Scotia, Meg Doyle is walking her beloved dog when they're suddenly ambushed by a pair of angry raccoons.

A recent sighting in South Africa of a half-human, half-fish beast draws Jeremy Wade into the story of a creature with ancient origins and a fearsome reputation.

After numerous credible eyewitness accounts of the Tasmanian Tiger in Australia, James Cook University has researchers on the move; Forrest joins their study before heading deep into the Cape York Peninsula.

Dino the dog's anxiety level has the owner sacrificing her own mental health treatments; another dog, Dexter, is becoming increasingly nippy and confused; the final push at Bin City needs to reap big rewards.

Treating their dog's allergy plunges a young couple deep into debt; a hognose snake is reluctant to eat; early plans for a dog sanctuary are riding on a successful, well attended auction.

Antonio builds the ultimate barn with all the modern comforts for two rescued miniature horses that insist on sleeping in their owner's bedroom.

Antonio transforms two Nigerian dwarf goats' space into the ultimate goat playground, complete with a climbing tower, observation deck, and an easy-to-clean three-story house.

Dr. Lavigne performs a doggy nose job to help a pug with bad breathing problems; Dr. Blue urgently treats Hardtime, a dog who's facing hard times battling heart disease; an opossum with a traumatic injury needs Dr. Ross's help.

A routine health check takes a frightening turn for lion brothers Lwazi and Ato; keepers await to see if otter couple Odie and Paula are expecting; a gorilla named Kanzi must prove she can receive vital medical care.

Complications arise after the birth of Talbert the giraffe; Robert rescues a black swan entangled in fishing line; Bindi and Chandler plan for Kingston the rhino's first birthday.

Sugar cares for blind pit bull, ravaged by other dogs; Pittsburgh couple falls in love with Baker Red; Earl cares for pup when homeless owner goes to rehab.

Tania, inspired by Snickers and Brandi, leads effort to find forever homes for their favorite dogs, and vows this to be the last Christmas they spend in shelters; photographer comes to Villalobos to shoot portraits of each dog for potential adopters.

Pete pushes his design skills to create an owl-inspired tree house library in Charlotte, N.C.; evoking the face of the bird and using all sorts of curves, including rounded walls and semi-circle bookcases, the crew builds a one-of-a-kind masterpiece.

Pete treks to New York's Catskill Mountains to build his first glass house in the sky; piecing materials together like a puzzle, Pete uses his clients' collection of 50 vintage windows to construct an elegant tree house incased by walls of glass.

Pete and his gang ride out to the Lone Star State to build a double-decker hideout in Texas Hill Country; Pete creates rustic perfection in six live oak trees with a saloon-style first floor for sippin' sarsaparilla and a glass floor for views below.

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.

A couple wants a treehouse inspired by a children's book with a grown-up twist, and at the same time, Pete and the team build a whimsical Tudor-style theatre treehouse.

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

Pete partners up in Utopia, Texas, for his first joint venture: a tree house bed-and-breakfast built for romance; a French-inspired chapel of love has a 25-foot steeple and the biggest bathroom Pete has built to date.

A couple wants a treehouse inspired by a children's book with a grown-up twist, and at the same time, Pete and the team build a whimsical Tudor-style theatre treehouse.

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

Pete partners up in Utopia, Texas, for his first joint venture: a tree house bed-and-breakfast built for romance; a French-inspired chapel of love has a 25-foot steeple and the biggest bathroom Pete has built to date.

Pete treks to New York's Catskill Mountains to build his first glass house in the sky; piecing materials together like a puzzle, Pete uses his clients' collection of 50 vintage windows to construct an elegant tree house incased by walls of glass.

Pete and his gang ride out to the Lone Star State to build a double-decker hideout in Texas Hill Country; Pete creates rustic perfection in six live oak trees with a saloon-style first floor for sippin' sarsaparilla and a glass floor for views below.

In Singapore's Marina Bay, royal otter clans battle for territory and survival; matriarch Queen Olivia fights to keep her crown and protect her family from Princess Eva and the Lost Army while her daughter plots a betrayal.

Otter Queen Olivia must make a life-changing decision when she discovers the consequences of her daughter's reckless betrayal; Eva and her Lost Army plan their revenge; the son of Empress White Whiskers returns home.

Jeremy Wade heads to the Mekong River in Thailand in search of the giant freshwater stingray.

Jeremy fishes in the Alaskan wilderness and searches for a lake monster of native legend.

Jeremy explores the legends and mystery surrounding the Congo River in central Africa.

Jeremy Wade searches for a two-hundred year old legend.

Jeremy Wade travels to Japan, searching for two legendary monsters.

Forrest is in Mozambique to track down a bull elephant that has been destroying local villages.

Forrest travels to the pacific northwest with zoologist and wife Jessica on a mission to uncover the truth about the centuries-old myth of the lake monster.

Dr. Dee flies to a remote clinic in Healy; tumors found on dog getting spayed; Dr. Dee readies Nugget the Bull to breed; Dr. Terry is surprised while giving six kittens their shots.

Nature wages war when Dr. Dee and Ken decide to rescue six baby owls after an eagle kills their parents; Dr. Dee's dog donates blood to a lab with auto-immune disease; cat receives stem cell therapy.

Dr. Dee performs surgery on a dog for three-hours straight to save its life; diagnosis is changed on a dog with seizures; Dr. Dee and Ken trek to Yakutat, Alaska where they haven't seen a veterinarian in two years.

A black Lab swallows toxic metal; a lost cat found with a mysterious injury; a tiny dog struggles to deliver a large puppy.

The team heads to Mexico to help desperate owners and their pets; a teenage boy and his sister worry about their sick dog; a remote village has never seen a vet.

Julia and her snake catcher colleague, Stuart McKenzie, deal with a large python hanging in a treetop. A mother discovers a snake while playing hide and seek with her children. Plus, Julia has acquired a tarantula as a new pet to overcome her fears.

Julia receives a call from a worried family who have discovered a very dangerous eastern brown snake under their patio. Together with two scientists, Julia wants to catch and milk the world's third most venomous snake, the dreaded coastal taipan.

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.

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.

Julia and her snake catcher colleague, Stuart McKenzie, deal with a large python hanging in a treetop. A mother discovers a snake while playing hide and seek with her children. Plus, Julia has acquired a tarantula as a new pet to overcome her fears.

Julia receives a call from a worried family who have discovered a very dangerous eastern brown snake under their patio. Together with two scientists, Julia wants to catch and milk the world's third most venomous snake, the dreaded coastal taipan.

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.

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.

Nature wages war when Dr. Dee and Ken decide to rescue six baby owls after an eagle kills their parents; Dr. Dee's dog donates blood to a lab with auto-immune disease; cat receives stem cell therapy.

Dr. Dee performs surgery on a dog for three-hours straight to save its life; diagnosis is changed on a dog with seizures; Dr. Dee and Ken trek to Yakutat, Alaska where they haven't seen a veterinarian in two years.

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.

Although threatened in their native range, mountain-dwelling tahr thrive in New Zealand; Dan Cabela investigates the challenges of managing a non-native species and balancing ecosystem protection with the economic benefit of hunters harvesting tahr.

In 1961, Dick Cabela founded Cabela's, unaware it would become a leading outfitting store. Now, his son Dan Cabela is on a quest to explore the hard truths of conservation, detailing the roles of hunting and wildlife utilization in modern conservation.

Wildlife agents rescue a black bear that's been hit on a highway; an illegal pig-slaughter operation is investigated.

The Miami-Dade animal services unit investigates a man who may have beaten a cat.

Animal cruelty investigators find two adopted dogs wandering the city streets in need of help.

Animal cruelty investigators have a difficult job on their hands when a hoarder deceives them; heartbreak results when investigator Kathy Labrada fights to save a desperately ill dog rejected by its owners.

A wildlife agent swims in alligator-infested waters to help save an injured alligator; a dog fights for its life after being hit by a car.

A dramatic rescue to save a manatee's flipper uncovers a secret; on the hunt for a gang of poachers.

The wardens are are on full alert as the tourist season begins; crowded campground is being terrorized by a fox; rowdy partygoer gets a little irresponsible on an ATV.

The animals all come out of the woodwork at the start of spring; a routine littering summons morphs into a rabid pit-bull encounter; new evidence emerges with the spring thaw on an old deer-poaching case.

The warden's responsibilities change with the season; Sgt. Spahr helps a wounded owl, while Warden Stevens leads a team on a night rescue mission to find a distressed hiker.

Aggressive hippos raised by the cocaine kingpin Pablo Escobar have escaped his abandoned compound in Colombia, becoming a dangerous and deadly invasive species; wildlife biologist Forrest Galante embarks upon a plan to stop them.

In a methamphetamine hotspot, drugs seep into local waterways, creating aggressive alligators; wildlife biologist Forrest Galante investigates the effects of meth on these reptiles and attempts to capture and rehabilitate a meth gator.

A late-night encounter with a beer-hunting bear sparks a cross-country investigation; wildlife biologist Forrest Galante tracks break-ins and uncovers a strange new trend, bears invading homes to chug booze and devour marijuana edibles.

Officers safeguard waterfowl, patrol ice fishers and snowmobilers; they also monitor off-road vehicle activity; the Department of Natural Resources relocates a historic lakeside building from an eroding bluff.

The lives of men and women who are making the Michigan wilderness and landscape a safer place for not only animals, but humans alike.

Officers use a deer decoy to catch trespassers, seize illegally imported deer at the border during the busy hunting season, and patrol lakes to ensure safe boating practices. Follow Michigan Conservation Officers as they protect and patrol the most precious natural resources in one of the nation's most remote areas.

A late-night encounter with a beer-hunting bear sparks a cross-country investigation; wildlife biologist Forrest Galante tracks break-ins and uncovers a strange new trend, bears invading homes to chug booze and devour marijuana edibles.

Officers safeguard waterfowl, patrol ice fishers and snowmobilers; they also monitor off-road vehicle activity; the Department of Natural Resources relocates a historic lakeside building from an eroding bluff.

The lives of men and women who are making the Michigan wilderness and landscape a safer place for not only animals, but humans alike.

Officers use a deer decoy to catch trespassers, seize illegally imported deer at the border during the busy hunting season, and patrol lakes to ensure safe boating practices. Follow Michigan Conservation Officers as they protect and patrol the most precious natural resources in one of the nation's most remote areas.

The animals all come out of the woodwork at the start of spring; a routine littering summons morphs into a rabid pit-bull encounter; new evidence emerges with the spring thaw on an old deer-poaching case.

The warden's responsibilities change with the season; Sgt. Spahr helps a wounded owl, while Warden Stevens leads a team on a night rescue mission to find a distressed hiker.

Neil takes the final steps toward making a town-wide electrical grid; Jeremy calls an emergency meeting to stop Neil's plans.

The power grid causes a ruckus at the town meeting; Jeremy considers whether McCarthy is worth fighting for; a showdown approaches.

The residents choose sides to draw visitors to the frontier town; when wolves begin stalking the streets, the locals must unite.

Winter threatens starvation for the locals, who must hunt for big game; the richest landowner begins a plan to open the frontier.

The hidden city is within reach, but the locals will need to help; temperatures drop, threatening ranchers; an emergency meeting is called.

McCarthy locals join forces to survive wolf attacks and starvation; residents begin to turn on each other at the Golden Saloon.

The Brown family makes the most of the long summer days in Alaska; a lumber shortage and an injury threatens to split the family apart.

Following Ami's injury, the family must work harder to stay on track with preparations; Birdie, Gabe and Bear search for deer; Bear steps up as hunt leader.

Browntown is halted due to an emergency; Billy makes an unexpected choice; Matt steps up to take his role more seriously.

Matt, Bam, Bear, and Gabe head out on their first-ever hauling job without their father, and it's anything but smooth sailing; Bird, Rain and Noah do their best to keep their homestead stable.

The Browns face turbulent weather as they try to accomplish a haul to Port Alexander at the very edge of Southeast Alaska and the open ocean; the Integrity shows it's age as problems arise and the Browns are left stranded in the middle of the water.

The four eldest Brown brothers prepare for a second solo mission with hopes of redeeming themselves; visitors arrive in Browntown.

Matt, Bam, Bear and Gabe feel the strain of making deliveries in harsh conditions; a decision that will change the lives of the wolf pack is made.

A happy homecoming for the Brown family that costs valuable time, and the lack of a working skiff, may leave a highly risky haul as the only possible remedy.

Noah stays behind to continue repairs to Browntown; the rest of the wolf pack embark on their riskiest hull yet with the aim of securing the skiff they need.

Patriarch Billy seizes an opportunity to tie up loose ends, strengthen his ties with the bush, and keep the wolf pack close with a family visit to Excursion Inlet.

An early spring provides an opportunity for the family of nine to address unfinished business; a visitor from Billy's distant past could undermine the future of Browntown.

The mayor of the island of Hoonah makes a surprise visit that could change the face of Browntown; the family rallies around Gabe when an opportunity comes with high risks.

Noah stays behind to continue repairs to Browntown; the rest of the wolf pack embark on their riskiest hull yet with the aim of securing the skiff they need.

Patriarch Billy seizes an opportunity to tie up loose ends, strengthen his ties with the bush, and keep the wolf pack close with a family visit to Excursion Inlet.

An early spring provides an opportunity for the family of nine to address unfinished business; a visitor from Billy's distant past could undermine the future of Browntown.

The mayor of the island of Hoonah makes a surprise visit that could change the face of Browntown; the family rallies around Gabe when an opportunity comes with high risks.

The Browns face turbulent weather as they try to accomplish a haul to Port Alexander at the very edge of Southeast Alaska and the open ocean; the Integrity shows it's age as problems arise and the Browns are left stranded in the middle of the water.

The four eldest Brown brothers prepare for a second solo mission with hopes of redeeming themselves; visitors arrive in Browntown.

Questions are answered about the French bulldog, poodle, airedale, chihuahua and Labrador.

A dog's eye view of the bond shared by people and their pets.

Ricky adopted a 20-foot Burmese python he rescued from a burning building, and now needs Antonio's help to transform his basement into an epic habitat with heated rock facades, a waterfall and a pond.

Antonio builds a backyard, temperature-controlled clubhouse with separate self-sustaining tanks and a common climbing area for two bearded dragons, and a cool hangout spot for the family.

Birds of prey at the Renaissance Faire are in need of the West Nile vaccine; Piper the peppy dachshund is not so peppy; Dr. Lavigne performs surgery; Dr. Ross helps Tesla the tortoise with a fractured beak.

A wombat named Daisy is suffering from mysterious health issues; transporting a giraffe calf; a secret hidden underneath the Melbourne Zoo is revealed.

Terri and Bindi witness and help with a complex koala surgery.

Tia, her children and the extended Villalobos family reveal behind-the-scenes stories about the dogs that stole their hearts over the years.

Mariah faces a challenging rescue when she realizes the dog in danger is deaf; former adopters come back to Villalobos set on adopting a special-needs dog; the rescue struggles to track a dog's owner because of outdated microchip information.

Hunter kills elk illegally, suspicious activity in the desert, bear tears apart the inside of a car, and the FWP track down a suspect with three warrants to his name.

Nighttime undercover operation is underway to stop illegal shooters; unruly suspect evading arrest; desert highway tragedy; outstanding warrant ruins family cruise.

Father arrested on a warrant while his son is apprehended on drug charges; fisherman caught wielding illegal firearm; wanted man captured; orphan bear released into the wild.