Forrest ventures home to Zimbabwe in search of the mysterious Cape lion; he and the crew navigate the African bush determined to get DNA proof, facing threats of charging rhinos and huge prides of lions.

In Vietnam, Forrest teams up with a conservation group to save the largest turtle species in the world from extinction; using cutting edge technology, they attempt to find a suitor for the last and only surviving Giant Softshell.

The southern Rocky Mountain wolf hasn't been seen in almost 80 years, but recent cattle attacks spark the possibility that is still exists; trekking high into the Sierras, Forrest is determined to bring it out of hiding.

In Vietnam, Forrest treks through the world's largest cave searching for the saola in a hidden oasis; this exotic species was only recently discovered, but rumors swirl that The Asian Unicorn might already be extinct.

Forrest ventures home to Zimbabwe in search of the mysterious Cape lion; he and the crew navigate the African bush determined to get DNA proof, facing threats of charging rhinos and huge prides of lions.

Jeremy Wade encounters the Amazon's legendary arapaima, one of the largest freshwater fishes in the world.

Jeremy Wade travels to the Sepik River in New Guinea to investigate a creature suspected of taking the lives of at least two fishermen.

The fun-filled early months in the lives of Savannah, Siberian and shorthair cats include exploring new realms and playing with other small household pets.

Frisky fun with glamorous American Curl kittens; Tonkinese youngsters bedevil their mother; a Maine Coon kitten bosses his siblings around.

The Irwins go to the Steve Irwin Wildlife Reserve; Robert leads his first croc-catching team; Bindi and Chandler have a life-changing announcement.

Ashley has a bad experience in the gator pit; Jimmy accuses Chris of poor training methods.

Paul and Scott must fend for themselves when Jimmy makes an adventurous trip to South Carolina.

A vicious cat named Kleo terrorizes her home, keeping the owners from their wedding day; another couple is desperate for Jackson's help with their cat Marco who tortures their tiny dog Yuki.

Jackson must figure out what is triggering his next feline's aggressive behavior. A crazed cat is enraged by her owners' roommate; a newlywed couple is concerned after their two cats behavior suddenly becomes unruly.

Return adopters visit Villalobos to find a dog that will feel at home on their boat; Tania and Mariah head out to rescue a stray that is hiding beneath a shipping container; parolee Jammall starts to slip up, risking his future at the rescue.

Lizzy and Elise struggle to rescue a dehydrated dog in the blazing heat; an anxious, abandoned dog is moved to a new warehouse for dogs with special needs; Tia and the twins help a friend of the rescue find the perfect match.

Pete has a nine day window to build a Zen-like sanctuary for some old friends in the shadow of the Blue Ridge Mountains in Canton, N.C.

Pete builds a 16-foot-high adventure headquarters embedded in three cedar trees and highlighted by a 360-degree wraparound deck for a thrill-seeking couple.

Adventurous Texas family, living on a 200-acre ranch, want a camouflaged treehouse that also serves as a guest house.

Pete builds a Swiss Family Robinson inspired treehouse in Michigan to help a man surprise his wife for their anniversary; Inspired but far more advanced than the original.

Pete explores tree houses worldwide that tap into one's inner spirits; a manta-ray-shaped tree house within a Thai jungle; a spirit-soothing retreat hidden in Australia's wilderness.

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 journeys to Kauai to build a sky-wave tree house for a couple who ditched the mainland for a laid-back lifestyle; he transforms a bohemian tree house for two former professional surfers into a masterpiece with a crow's nest 60 feet above ground.

Pete builds a citadel fortress for a Texan couple who loves all things medieval; a 25-foot-high tower holds a round table and thrones, as well as a glass floor loft; a metalsmith joins the build to craft medieval touches.

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 journeys to Kauai to build a sky-wave tree house for a couple who ditched the mainland for a laid-back lifestyle; he transforms a bohemian tree house for two former professional surfers into a masterpiece with a crow's nest 60 feet above ground.

Pete builds a citadel fortress for a Texan couple who loves all things medieval; a 25-foot-high tower holds a round table and thrones, as well as a glass floor loft; a metalsmith joins the build to craft medieval touches.

Pete builds a 16-foot-high adventure headquarters embedded in three cedar trees and highlighted by a 360-degree wraparound deck for a thrill-seeking couple.

Adventurous Texas family, living on a 200-acre ranch, want a camouflaged treehouse that also serves as a guest house.

In Liverpool, new recruit Chico finds a huge stash of cannabis up an alleyway, helping his handler PC Bartley disrupt a major drugs operation.

In Yorkshire, Alsatian Thor joins a firearms unit and storms a derelict building; sniffer dog Meg raids a flat with possible drug dealing links.

Officers investigate reports of an illegal dog fight and find three pit bulls in need of help; a terrified dog is rescued from beneath a trailer.

In some cases investigators' intervention makes the difference between life and death.

Motivated by the extraordinary compassion and belief that all animals deserve treatment, the vet and thrift store team of the Regional Animal Protection Society work tirelessly to offer low-income pet families access to life-saving healthcare.

The Thrift Store crew is left shocked by the aftermath of the accident as donations flood in; Allison takes home a patient to make sure he doesn't take a turn for the worse.

When doctors discover Benny, a lovable pitbull mix has a large cancerous lump on his head, his owner is determined to have a little more time; Dr. Schwartz is on a mission to uncover a mystery behind Tigger the cat's swollen face.

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.

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.

Dr. Jeff and his team give some aid at Lakota Reservation in South Dakota; Amy debates about emergency surgery for a French bulldog that ate its favorite toy; Susan finds a forever home for Koda the lovable canine.

A dog named Mac is rushed in after being hit by a car; Dr. Amy performs surgery on a dog named Rebel who was impaled with a stick, while Dr. Baier helps Kino, a hound in heat.

Coco the Frenchie needs Dr. Jeff's help to remove a large lump from her face; vet tech Christine faces her fear of birds while helping pigeons from Rocky Mountain Adventures; Drs. Jeff and Baier aid a red-back turtle with an infected foot.

Dr. Jeff performs surgeries with the help of two vet students; a tribe of fainting goats is seen by Dr. Jeff and Hector; Dr. Amy discovers why a cute and cuddly kitten is teary-eyed.

A daredevil dog is saved by Dr. Jeff after it jumped from a fast-moving car on the highway; Dr. Don solves a medical mystery, while a couple's mischievous rescue guinea pigs cause a stir.

Dr. Jeff performs a surgery he's never done before on a dog experiencing labored breathing; a senior canine is abandoned by its owner, and the staff must find it a new forever home; neglected ornate box turtles are saved by Dr. Baier.

Dr. Jeff discovers a large mass on a loveable canine; Dr. Don helps Kelly the vet tech with her dog's sun-damaged nose; Dr. Baier and Hector join forces to treat wild bison.

Dr. Dee has to be careful when she visits a ranch to check on a pack horse named Red; Dr. Terry and Nicole head to a remote clinic; dog has a mass that appears to be cancerous.

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.

Dr. Jeff performs a surgery he's never done before on a dog experiencing labored breathing; a senior canine is abandoned by its owner, and the staff must find it a new forever home; neglected ornate box turtles are saved by Dr. Baier.

Dr. Jeff discovers a large mass on a loveable canine; Dr. Don helps Kelly the vet tech with her dog's sun-damaged nose; Dr. Baier and Hector join forces to treat wild bison.

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.

A dog named Mac is rushed in after being hit by a car; Dr. Amy performs surgery on a dog named Rebel who was impaled with a stick, while Dr. Baier helps Kino, a hound in heat.

Coco the Frenchie needs Dr. Jeff's help to remove a large lump from her face; vet tech Christine faces her fear of birds while helping pigeons from Rocky Mountain Adventures; Drs. Jeff and Baier aid a red-back turtle with an infected foot.

British Marine Pen Farthing is the founder of Nowzad, Afghanistan's only official animal sanctuary; when a U.S. soldier rescues six puppies while deployed and can't bring them back home, Pen and his team are on a mission to get them reunited.

Chimp expert Estelle Raballand has formed an incredible bond with Ponso, a chimp who lives alone on an island and has been dubbed the loneliest chimp in the world; she's determined to find him a companion and thinks she has found the perfect match.

At the annual ice-fishing tournament in Washington, N.H., numerous fishermen are cited for breaking the law; Officer Canfield catches reckless snowmobilers riding without registrations then receives a call that has him rushing to the hospital.

A report of possible gunshots fired near a police chief's home has officers on the hunt for answers, but what K-9 Moxie discovers leads to a twist in the case.

As temperatures drop to near-freezing, Officers Canfield and Jones use an ROV to search Merrimack River for a missing person; a man is caught illegally releasing coyotes from traps; officers host a meet-and-greet at the headquarters.

After an abandoned barrel is discovered, Officer Hannett works with local police to see if it's related to a 20-year-old cold case regarding a missing mother and daughter.

On the Bald Mountain Trail, officers help rescue an injured hiker, but the icy trail puts the whole crew at risk; Officer Egan is the first medical responder to a sudden snowmobile crash, and two four-wheelers crash through ice on Webster Lake.

In the dark of the night, Officers Hannet and Masucci rush to the aid of an injured hiker trapped on Mount Monadnock; Lt. Cheney and Officer Jones patrol the Hooksett Dam, where river herring are spawning; a bear causes chaos.

A call is made about two bobcats on the loose and Officer McKee must track them down before things escalate; a fisherman is caught concealing his unregistered snowmobile; Officer Cyrs rushes to the site of a head-on snowmobile accident.

Wardens tackle elk harassment, illegal shootings and rescue a deer.

Discovering the lives of conservation officers of Montana defending public lands, handling anti-poaching sting operations and more.

Discovering the lives of conservation officers of Montana defending public lands, handling antipoaching sting operations, and more.

Wardens use new aircraft to patrol from above; on the ground, wardens experience a crazy weekend during the Yellowstone Boat Float and ensure participants comply with the law; their coordinated efforts enhance safety and order in the region.

Wardens must be cautious as they release a trapped black bear back into the wild; they pull together all their resources to stop illegal hunting in the valley.

A warden checks on a hunter he suspects may be illegally baiting deer. A warden tracks down hunters using blinds on state land and finds they aren't quite abiding by the law. Wardens enforce the law with anglers on the Detroit River.

The Jobbie Nooner event has wardens patrolling the waters of Lake St. Clair; things get interesting when a massive storm rolls in; spring in Michigan can come with major forest fires and the DNR puts all their resources to keep them in check.

A hunter who mistakenly takes down an antlered elk must face the consequences; a warden must come down hard on an ORV hunter who is skirting the law; a warden investigates a hunter on private property.

Officers encounter many hunters on the opening day of waterfowl season; Chief Haines and his friends enjoy hunting during their annual Grouse Camp trip, and activities heat up on the lake as patrons celebrate the 4th of July.

A warden checks on a hunter he suspects may be illegally baiting deer. A warden tracks down hunters using blinds on state land and finds they aren't quite abiding by the law. Wardens enforce the law with anglers on the Detroit River.

The Jobbie Nooner event has wardens patrolling the waters of Lake St. Clair; things get interesting when a massive storm rolls in; spring in Michigan can come with major forest fires and the DNR puts all their resources to keep them in check.

A hunter who mistakenly takes down an antlered elk must face the consequences; a warden must come down hard on an ORV hunter who is skirting the law; a warden investigates a hunter on private property.

Officers encounter many hunters on the opening day of waterfowl season; Chief Haines and his friends enjoy hunting during their annual Grouse Camp trip, and activities heat up on the lake as patrons celebrate the 4th of July.

Discovering the lives of conservation officers of Montana defending public lands, handling anti-poaching sting operations and more.

Discovering the lives of conservation officers of Montana defending public lands, handling antipoaching sting operations, and more.

A routine neutering takes a turn when Dr. Vasilescu can't find a canine's testicles; Letty the Burmese sheepdog pup struggles with excessive sleep.

A friendly neighborhood pooch comes into RAPS when experiencing eye trouble; the thrift store gets a second chance as Karen and the team discover an oasis of treasure amid old bins destined for the landfill.

Bindi and the zoo welcome two baby echidnas; health concerns become a major threat for one puggle's survival; a jabiru goes missing.

Troublesome alligators must be removed from a school playground, a nursery and a housing development; a Burmese python sinks its fangs into Tre.

Paul hopes to capture a gator before it gets hooked by an uncaring trapper; Tre books a risque photo shoot with gators and swimsuit models.

Jackson's expertise is needed when a family is at odds with their cat, Xena, who suddenly became aggressive; a couple rescued a kitten and their cat, Gigi, has gone from sweet and cuddly to dark and dangerous.

Addie has been roughhoused like a dog, transforming her into an aggressive biter; Kitty, a Russian Blue, has been treated like a princess by her owner's boyfriend, but it's not enough.

Tia's son, Kanani, and his fiancée, M2, prepare for their wedding; parolee Jammall finds an abandoned dog and asks Mariah for help rescuing it; a woman and her son visit Villalobos hoping to find a new friend for their family dog.

Villalobos celebrates Halloween by throwing a costume party for dogs to help raise money for the rescue; an old friend from the TV crew comes to adopt a family member; Lizzy struggles to rescue a stray dog in the middle of the night.

The team investigates evidence of possible Bigfoot DNA, then goes creature-hunting in the waterways of Oklahoma City.

The mayor of a small Louisiana town believes unusual activity is afoot in his community; the team decides to lure the alleged creatures with a new baiting technique.

The team heads to a Vermont apple orchard to investigate a photograph of an alleged Bigfoot carrying a baby.

The team journeys to the island of Sumatra in search of Indonesia's elusive orang pendek.

Howls are recorded in a notorious sasquatch hot spot; the team uses high-tech thermal equipment on its visit to Washington state.

As fall approaches, the Kilchers kick into high gear; a large bull moose stalks the homestead and Eivin must keep his family safe; Atz Sr. hunts bear and nearly loses a horse; Otto begins the cleanup from an explosive wildfire prevention project.

The Fox Cabin nears completion; Atz Sr. unites seven Kilcher siblings to finish the interior of his legacy rebuild; Jane, August and Etienne embark on the final fishing trip of the year; Eivin suffers a devastating loss.

As fall approaches, the Kilchers kick into high gear; a large bull moose stalks the homestead and Eivin must keep his family safe; Atz Sr. hunts bear and nearly loses a horse; Otto begins the cleanup from an explosive wildfire prevention project.

The Fox Cabin nears completion; Atz Sr. unites seven Kilcher siblings to finish the interior of his legacy rebuild; Jane, August and Etienne embark on the final fishing trip of the year; Eivin suffers a devastating loss.

The Fox Cabin nears completion; Atz Sr. unites seven Kilcher siblings to finish the interior of his legacy rebuild; Jane, August and Etienne embark on the final fishing trip of the year; Eivin suffers a devastating loss.

The mayor of a small Louisiana town believes unusual activity is afoot in his community; the team decides to lure the alleged creatures with a new baiting technique.

The team heads to a Vermont apple orchard to investigate a photograph of an alleged Bigfoot carrying a baby.

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.

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.

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.

The Gator Boys leave Everglades Holiday Park; Jimmy locates an alligator ranch in Mississippi; Paul has a big decision to make.

Paul and Jimmy get off to a rocky start in Mississippi; the boys work in sweltering heat to finish a gator pit before the wrestling shows can begin.

A couple is at their wits end after their cat, Gracie has terrorized them for nearly two years; a mother-daughter duo are at a loss after adopting their cat Miley who attacks them and their two dogs on a daily basis.

Gus, a frisky feline has a huge appetite and eats everything in sight; rescue cat Stella has left her owner single because she has chased off every date with her brutal behavior.

The family of Mutt, a Villabos employee who recently passed away, meets the dog he chose for them; Tia and M2 go on a wild goose chase near a middle school.

Tania is shocked by what she finds once she gets a stray dog back to the rescue; an empty nester brings her family to Villalobos to help her find a companion; the family is determined to solve a messy pigeon problem.

Two officers join forces to summon a man for baiting without a permit; pursuing a pair of ATV speedsters riding with a toddler with no safety gear; a call about a deer wedged in a fence.

A team is deployed to relocate a moose that has found its way into the city; during an undercover mission, Officer Egan encounters multiple violating bird hunters; Officer Canfield rushes to rescue an injured hiker trapped on Mount Carrigain.

Lopashanski attempts every trick in the book to wrangle a stubborn moose off of a busy roadway; Officer Canfield plays a game of cat and mouse with a suspected illegal deer hunter; Officer McKee and Demler investigate an illegal turkey kill.

In Newton, N.H., Officer Letourneau receives an interesting tip about a woman in possession of baby flying squirrels; things take a turn for officers investigating an ATV accident; an OHRV rider is caught trespassing on restricted trails.

The New Hampshire Fish and Game Dive Team fights harsh conditions while on a double drowning mission at the Merrimack River; Officer Egan rescues a baby owl after the nest is disturbed; a family of ATV riders is busted for breaking the law.

An investigation over unattended fishing lines takes a turn when it's discovered that the fisherman was arrested for shooting his friend; over in Colebrook, a snowmobiler is confronted for riding across a landowner's property without permission.

The dive team searches the Ammonoosuc River for gravestones and bodies.

After an abandoned barrel is discovered, Officer Hannett works with local police to see if it's related to a 20-year-old cold case regarding a missing mother and daughter.

When a reckless UTV strikes Officer Holmes from behind, Officer Mancini helps him seek medical treatment while handling the crime scene; a car accident kills a doe leaving two twin fawns vulnerable, and firecrackers give a veteran intense flashbacks.

An investigation over unattended fishing lines takes a turn when it's discovered that the fisherman was arrested for shooting his friend; over in Colebrook, a snowmobiler is confronted for riding across a landowner's property without permission.

The dive team searches the Ammonoosuc River for gravestones and bodies.

After an abandoned barrel is discovered, Officer Hannett works with local police to see if it's related to a 20-year-old cold case regarding a missing mother and daughter.

When a reckless UTV strikes Officer Holmes from behind, Officer Mancini helps him seek medical treatment while handling the crime scene; a car accident kills a doe leaving two twin fawns vulnerable, and firecrackers give a veteran intense flashbacks.

A team is deployed to relocate a moose that has found its way into the city; during an undercover mission, Officer Egan encounters multiple violating bird hunters; Officer Canfield rushes to rescue an injured hiker trapped on Mount Carrigain.

Lopashanski attempts every trick in the book to wrangle a stubborn moose off of a busy roadway; Officer Canfield plays a game of cat and mouse with a suspected illegal deer hunter; Officer McKee and Demler investigate an illegal turkey kill.

A look at why a skunk would do a handstand, why 5,000 birds fell from the sky in Arkansas, and what would make a frog flash like a lighthouse.

A look at the possibility that zombie spiders are real and why would a pod of beluga whales adopt a unicorn of the sea.

A look at why a humpback whale would hold a diver hostage, how a colony of 1.5 million animals hide from the world in plain sight, and how a surprising stash of acorns could disrupt a whole town.

A look at how spiders covered a town in webs overnight and why a lake in South America is the lightning capital of the world.

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

The boys rescue a creepy-looking alligator; Jimmy battles a canebrake rattlesnake; Ashley becomes the marketing director of the Gulf Coast Gator Ranch.

The boys search for a legendary 15-foot alligator known as Big Bull; Paul and Chris hope to determine if whips or knives make the better accessory.

Former reality star Peggy Tanous is struggling to keep the peace between her cat Shadow and her family. Meanwhile, a couple is desperate for Jackson to change the frisky behavior of their feline, Albert.

When Debbie returns home from a trip, she finds her house covered and smelling like cat pee from her boyfriend, Brian's cat Blinkie, who denies the problem;Krisi may have to choose between marriage to her boyfriend Jason and her cat Frankie.

One of Earl's favorite senior dogs finally has a chance at his forever home; Tia heads to a small shelter in rural Louisiana to help with a hound; Tania, Mariah and Lizzy take on a project that showcases dogs in their forever homes.

Wanting to give the senior dogs a special place, Lizzy, Tania and Mariah create a retirement center at one of the warehouses; Lizzy rescues a dog that has one of the worst skin conditions she has ever seen.

Alison prepares to release an endangered penguin. Emily anesthetizes a cheetah that needs to go to a new home. Will and Rachel at Care for the Wild introduce orphaned baby rhinos Ribbon and Lazuli, whose mums were killed for their horns.

Anna and the team dehorn two rare and dangerous black rhinos; Emma spends months rehabilitating Finya the Black-Backed Jackal for release, but getting her ready to move proves difficult; Jenna and Sean tackle human and elephant conflict.

Partially blind bull elephant Matambu is seriously injured; Harriet and the team are on a race against time to find him; Emily and Annie work with a herd of skittish roan antelope when one bolts and needs to be tracked down.

Jenna and Sean lead forces in vital elephant research; they compare glucose levels in wild elephants with that of similar elephants kept in zoos.

Harriet and the team tackle the problem of human and elephant conflict with an unusual experiment using African honeybees; Alison checks on a colony of Cape fur seals.

Debbie calls on Emma to take in two baby jackals that have been found abandoned. Josie at the Vervet Monkey Foundation introduces orphan Theo to his new foster mom. Vets Emily and Will need to relocate two cheetahs to spread bloodlines.

Emma at Umoya Khulula Wildlife Center has a tiny bush baby that needs round-the-clock care. Jenna and Sean are forced to stop elephant research for the day as a bush fire comes perilously close to destroying their home.

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; Bindi visits friends at childhood favorite spot Oregon Coast Aquarium.

As Bindi celebrates her 21st birthday, she gets a surprise proposal from her boyfriend, Chandler; things get dangerous as Robert wrangles gators in thick mud; Terri helps with the momentous birth of a baby white rhino.

Debbie calls on Emma to take in two baby jackals that have been found abandoned. Josie at the Vervet Monkey Foundation introduces orphan Theo to his new foster mom. Vets Emily and Will need to relocate two cheetahs to spread bloodlines.

Emma at Umoya Khulula Wildlife Center has a tiny bush baby that needs round-the-clock care. Jenna and Sean are forced to stop elephant research for the day as a bush fire comes perilously close to destroying their home.

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; Bindi visits friends at childhood favorite spot Oregon Coast Aquarium.

As Bindi celebrates her 21st birthday, she gets a surprise proposal from her boyfriend, Chandler; things get dangerous as Robert wrangles gators in thick mud; Terri helps with the momentous birth of a baby white rhino.

Anna and the team dehorn two rare and dangerous black rhinos; Emma spends months rehabilitating Finya the Black-Backed Jackal for release, but getting her ready to move proves difficult; Jenna and Sean tackle human and elephant conflict.

Partially blind bull elephant Matambu is seriously injured; Harriet and the team are on a race against time to find him; Emily and Annie work with a herd of skittish roan antelope when one bolts and needs to be tracked down.

Young Jack Russell terriers keep their mother busy; Portuguese water dogs don't like getting wet; bull mastiff puppies keep on growing.

Three litters of puppies go from cute to cuter as a trio of Rhodesian Ridgebacks run circles around their mum, Chow Chow puppies bring attitude, and Havanese Lulu has her paws full.

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.

Problems with nuisance alligators keep the boys busy; a boy encounters a danger in his pool; Ashley's PR scheme involves Scott dressing in a gator costume.

Paul calls in an expert when Allan and Curtis insist Mississippi alligators are stronger than their counterparts from Florida; Sara feels neglected by Jimmy.

Ambreen has been in an abusive relationship for the past 13 years, but her abuser is her cat, Calvin; Josh has two women in his life--his cat Nico and his girlfriend, who recently moved in with them. But Nico has been anything but welcoming.

A man is tired of living in fear of his girlfriend's cat and vows if things don't change he will move out permanently. Meanwhile, a couple is convinced their feline Woody is the root cause behind their deceased cat's death.

Lizzy tries to track down the owner of a dog tied up outside the rescue; an older couple comes looking for their first dog, but their choice requires some special temperament testing; when a dog develops allergies, Mariah looks for a natural cure.

Two strays lead Lizzy and Villalobos employees on a wild goose chase; a grandmother comes to Villalobos looking for another canine companion, but her dog has other plans; Tania pursues her dream to write a children's book.

In the deep South lives a fish reputed to have committed a series of violent attacks on humans, said to be as vicious as a shark and as big as a gator; extreme angler Jeremy Wade heads to Texas to reveal the truth about the alligator gar.

Jeremy Wade searches for the Amazon's notorious flesh eaters; a man is swallowed whole by a fish.

Wade travels to Germany, where he meets victims of a beast seen raising its snout above the surface of freshwaters in Europe for the past 700 years; discovering the Wels catfish, an aggressive predator of man-eating proportions.

Jeremy investigates the bull shark.

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

Forrest is determined to find out if the famously reclusive Ivory Billed Woodpecker still exists; the alligator and poisonous snake infested swamps of Louisiana make for a challenging mission, but he is prepared for anything.

Forrest ventures home to Zimbabwe in search of the mysterious Cape lion; he and the crew navigate the African bush determined to get DNA proof, facing threats of charging rhinos and huge prides of lions.

Deep in the jungles of Colombia, Forrest is on a mission to prove the Rio Apaporis Caiman still exists; locals believe this crocodilian resides within a lawless land inhabited by guerrilla rebels, kidnappers and deadly predators.

Forrest is in the Galapagos seeking the Fernandina tortoise, an animal that was only seen once, over 100 years ago; the clues are here, along with an abundance of unique species, raising hopes of a historic discovery.

Forrest is determined to find out if the famously reclusive Ivory Billed Woodpecker still exists; the alligator and poisonous snake infested swamps of Louisiana make for a challenging mission, but he is prepared for anything.

Forrest ventures home to Zimbabwe in search of the mysterious Cape lion; he and the crew navigate the African bush determined to get DNA proof, facing threats of charging rhinos and huge prides of lions.

Deep in the jungles of Colombia, Forrest is on a mission to prove the Rio Apaporis Caiman still exists; locals believe this crocodilian resides within a lawless land inhabited by guerrilla rebels, kidnappers and deadly predators.

Forrest is in the Galapagos seeking the Fernandina tortoise, an animal that was only seen once, over 100 years ago; the clues are here, along with an abundance of unique species, raising hopes of a historic discovery.

Jeremy Wade searches for the Amazon's notorious flesh eaters; a man is swallowed whole by a fish.

Wade travels to Germany, where he meets victims of a beast seen raising its snout above the surface of freshwaters in Europe for the past 700 years; discovering the Wels catfish, an aggressive predator of man-eating proportions.

Six Coton de Tulear puppies romp on a farm; a young German shepherd struggles with obedience classes; twin French bulldog pups get in a tussle.

Oreo the tiny tuxedo kitten meets a smelly look-alike; Russian Blue siblings go on an adventure; Freckles the Ocicat tries to control five little jungle cats.

Robert continues his father's legacy as he faces off with Bosco, the most aggressive croc at the zoo; Bindi lends a hand when a koala needs eye surgery.

The boys deal with more nuisance alligators; Tre embarks on a mission to locate a legendary creature that supposedly haunts the bayous of Mississippi.

Paul makes a bid that could bring the Gator Boys back to Everglades Holiday Park; a photo shoot involving alligators takes a dangerous turn.

A woman creates a video as a desperate plea for help to find her ferocious feline a new home; a couple has three cats who viciously attack one another while treating the home as their personal litter box.

A photographer who lives and works out of his home is at risk of losing his business and his assistant because of his bloodthirsty cat; a fat feline's love for food is bound to be his greatest downfall.

Lizzy and Elise struggle to rescue a stray dog on the train tracks near the Villalobos warehouse; Mariah enlists help to get to the bottom of Tater's nagging pain; a senior dog with a long medical history finally has her shot at a forever home.

As a hurricane bears down on VRC, Tia and the crew race to get dogs to safety; Mariah takes the reins for her first solo wolfdog rescue; Lizzy and Earl help a music-loving Kentucky couple find the perfect dog to join their karaoke nights.

Pete builds ski lodge-style treehouse complete with an indoor-outdoor fireplace and a rooftop snowmaker for a ski-loving family.

Busy film industry clients in Fayetteville, Ga. request a treehouse on their exuberant 63-acre plot of land, inspired by mid-century architecture and equipped with a zip line; Pete swings by the treehouse of Dale Earnhart Jr.

Surrounded by fields of red poppies and intertwined within a giant live oak, Pete creates a dining room tree house with a Provence countryside feel as part of a French restaurant.

Pete constructs a tasting room, high above the apple orchards, for Walden, N.Y., hard cider company Angry Orchard.

Pete hands the reins over to Roderick for the next build; a spiral staircase wrapped in branches, a hexagonal tower with elegant stained glass windows and a 360 degree observation platform.

Pete and his crew trek to the Blue Ridge Mountains to build a tree house for one of their own, carpenter Mike Reynolds; sitting 16 feet high, it makes the perfect rustic guesthouse to host the raucous Appalachian Breaking Up Christmas tradition.

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

Pete travels through France with tree house visionary Alain Laurens; winding through the magical countryside, Alain shows Pete his structures that implement ingenious engineering, reach dizzying heights, and redefine what a tree house can be.

Pete heads to Alabama's Appalachia to build a super spy treehouse; he pulls out all the stops to make the client's espionage-themed dreams come true; gadgets, hidden passageways, secret rooms and more.

Pete and his crew trek to the Blue Ridge Mountains to build a tree house for one of their own, carpenter Mike Reynolds; sitting 16 feet high, it makes the perfect rustic guesthouse to host the raucous Appalachian Breaking Up Christmas tradition.

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

Sign off.

Pete heads to Alabama's Appalachia to build a super spy treehouse; he pulls out all the stops to make the client's espionage-themed dreams come true; gadgets, hidden passageways, secret rooms and more.

Busy film industry clients in Fayetteville, Ga. request a treehouse on their exuberant 63-acre plot of land, inspired by mid-century architecture and equipped with a zip line; Pete swings by the treehouse of Dale Earnhart Jr.

Surrounded by fields of red poppies and intertwined within a giant live oak, Pete creates a dining room tree house with a Provence countryside feel as part of a French restaurant.

In Yorkshire, PC Fletcher's dog Patto is injured chasing a burglar; in Merseyside, PC Harris and his dog Kane are trying to track down the driver of a stolen car.

PC Bartley reminisces about his first dog, who was killed in action chasing a gang of burglars; sniffer dog Lucy is called into action when a driver is stopped.

Counting down the very best online video clips in the web-o-sphere to find America's cutest cat.

A compilation of pet animals from America, including technologically savvy cats, friendly dogs and more.

Cats cram themselves into tight spots, hang out with unusual friends, and demonstrate their athletic abilities.

One feline has an appetite that's shockingly on the money, while another's taste for stringy oddities appears to be insatiable; while Ben is back home visiting family, an exotic bird with questionable peckishness puts Dr. G out of his comfort zone.

Dr. G gets tied up as he unravels the cause of Ivan the cat's questionable mood; a fellow veterinarian calls for help when her beloved Poodle's cough points to foreign material in an unusual place.

A pet owner who is a nurse gets a front-row seat as Dr. G explores a troublesome appetite; a feline at risk for a dangerous blockage means a high-pressure game of cat and mouse.

An old dog develops new tastes that aren't exactly what they seem; when a feline devours a stringy oddity, vet staff are blind to its identity; Ben realizes Dr. G is nearing a major career milestone.

A canine's countertop gulp puts Dr. G and Ben on the road to a wholly challenging case; a feline who may have nibbled from a first aid kit presents a dire situation; Ben tries to pull his old school dad into the 21st century with mobile digital gear.

An apparent dog treat turns out to be anything but for Norman the canine; a cat with unexplained symptoms has Dr. G chasing a cause; a suspected foreign body case proves to be more than anyone bargained for.

A Husky has been baited by a dangerous nibble; Dr. G must be precise with a Boston Terrier believed to have troublesome objects in its ear and nose; an exotic animal charity inspires Ben to harness humor for a good cause.

A former stray cat that's believed to have scarfed an unidentified snack means a jagged challenge; a magnetizing situation draws Dr. G in, putting his skill and expertise to the test; Ben hopes to see his dad hit a big career milestone before summer ends.

A dog is rushed to the clinic after being struck by a car; four rats are relinquished to Susan and must be neutered before adoption; a girl rescues kittens in Grand Junction; a pair of lovable Yorkies come in with knee issues.

The cause of a senior dog's lump; a cat named Tigger is monitored for unusual eating habits; a puppy that was bought online gets sick; Petra shows off her guinea pigs.

Dr. Jeff and Petra train new vets at a wildlife sanctuary in Mexico; spaying an endangered jaguar; helping an injured osprey.

Dr. Jeff and Ben head to an island in Panama to help with the pet population; a terrier loses a battle against a German shepherd puppy, and a sickly sphinx kitten needs medical attention.

An adventurous pup falls from a trampoline and it's up to Dr. Jeff and Petra to mend its broken leg; a dog called Pebbles must undergo emergency surgery for bladder stones; Dr. Jeff also helps a young alligator with an injured tail.

Dr. Jeff and his team give some aid at Lakota Reservation in South Dakota; Amy debates about emergency surgery for a French bulldog that ate its favorite toy; Susan finds a forever home for Koda the lovable canine.

A dog named Mac is rushed in after being hit by a car; Dr. Amy performs surgery on a dog named Rebel who was impaled with a stick, while Dr. Baier helps Kino, a hound in heat.

Dr. Dee and her husband Ken host a clinic in a town with a population of 107; back at Animal House, Dr. Dee races to save an akita with a gunshot wound.

Dr. Dee and Ken head to Eagle, Alaska, to host a vet clinic; dog that suffered a vicious attack needs emergency surgery; Dr. Dee contemplates a lovesick turtle mystery; checking a rancher's cows for pregnancy.

Dr. Jeff and his team give some aid at Lakota Reservation in South Dakota; Amy debates about emergency surgery for a French bulldog that ate its favorite toy; Susan finds a forever home for Koda the lovable canine.

A dog named Mac is rushed in after being hit by a car; Dr. Amy performs surgery on a dog named Rebel who was impaled with a stick, while Dr. Baier helps Kino, a hound in heat.

Dr. Dee and her husband Ken host a clinic in a town with a population of 107; back at Animal House, Dr. Dee races to save an akita with a gunshot wound.

Dr. Dee and Ken head to Eagle, Alaska, to host a vet clinic; dog that suffered a vicious attack needs emergency surgery; Dr. Dee contemplates a lovesick turtle mystery; checking a rancher's cows for pregnancy.

The cause of a senior dog's lump; a cat named Tigger is monitored for unusual eating habits; a puppy that was bought online gets sick; Petra shows off her guinea pigs.

Dr. Jeff and Petra train new vets at a wildlife sanctuary in Mexico; spaying an endangered jaguar; helping an injured osprey.

Derrick Campana first began building prosthetics for humans, but one day that all changed when he built his first prosthetic for a dog, and then an elephant.

Jan Creamer and Tim Phillips, two of the most effective animal crusaders in the world, found Animal Defenders International in 1990 and target the abuse of animals in circuses.

A tense confrontation ensues when Wardens Scott and Gould respond to a call about an illegal deer hunting case; two raccoons find their way to a gas station and must be trapped; Warden Boone handles a disgruntled hunter at a deer hunting club.

In Llano County, a jet skier's life is spared after an explosion on the water; when a man fakes his own death, Warden Herchman and Stapleton join forces to track him down; a man is found trespassing while fishing.

Warden Cummings deals with an angry man who blew a stop sign; Warden Boone helps chase a trio of armed robbers on the run; Warden Inman investigates a group of suspected deer hunters for trespassing.

Game Wardens Mallory Mitchell and Jeremy Lindsey intervene when an overloaded boat and unruly jet skiers put lives at risk; Randolph McGee investigates reports of a wild hog being tortured; gathering up gator.

Warden Randolph McGee surprises a thief with real-time footage from a stolen camera; game warden Allison Hatten races to the aid of boaters stuck in quicksand; a pair of suspected road hunters tell an unlikely story.

On Lake Sam Rayburn, game wardens tangle with unruly crowds while rescuing a stranded family; Warden Kegan Gould unearths a devastating secret after questioning a suspicious rock collector; an abandoned baby animal gets a second chance.

When a wakeboarder's life is endangered by a critical injury, game wardens leap into action; Randolph McGee uncovers bizarre activity on a stakeout; Derrick Lopez gets creative to rescue a wild animal trapped in a garage.

A look at the lives of Montana conservation officers who defend public lands, handle anti-poaching sting operations and more.

Warden Taylor keeps the peace between hunters and landowners; Warden Golie first gets to the bottom of a curious case and later is shocked by hunters' behavior; Warden Luepke has a teachable moment with hunters who harvest deer illegally.

Discovering the lives of conservation officers of Montana defending public lands, handling antipoaching sting operations, and more.

Warden Taylor looks into hunters reported on a property without the landowner's permission; Warden Burroughs makes a tough decision when deer get their antlers stuck during a fight; Wardens Holland and Taylor investigate elk hunters harassing a herd.

Warden Kuka catches a repeat offender in the act; Warden Holland finds that someone fishing without a license also has a warrant out for his arrest; Wardens Taylor and Burroughs use an elk decoy to entice hunters.