A first-ever, in-depth and behind-the-scenes look at the diverse animals residing at the Bronx Zoo, including the knowledge and diverse skills that are needed to run the world-famous facility.

The slow loris has a tiny window for breeding, so staff anxiously help a potential pair connect; the veterinary team develop ground-breaking techniques to treat the stoic pigeons; an okapi with a limp gets a helping hand.

Iray, a red ruffed lemur, is rushed to the health center when keepers discover a wound on its leg; a new exhibit is built for the Pallas' cats, the original grumpy cats; seven baby turtles join the zoo's colony of an endangered species.

Three rare dhole canines are prepared to make their cross-country journey to the zoo, and keepers anxiously await their arrival.

The Zoo's huge male sea lion is in rut, and staff need to move the younger males before he becomes territorial; the veterinary team come up with a solution to repair Dinky the Flamingo's broken ankle; feeding a rock python proves challenging.

A new bison calf has a hard time keeping up with his mom; the bird department prepares a group of Von der Decken hornbill chicks for their move to the Minnesota Zoo; keepers at the Central Park Zoo hope the female snow monkeys accept a new male.

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.

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.

A first-ever, in-depth and behind-the-scenes look at the diverse animals residing at the Bronx Zoo, including the knowledge and diverse skills that are needed to run the world-famous facility.

Two sickly newborn fawns form an unbreakable bond while they are hand-reared by staff; the leopard Khazo gets a surprise that enhances its life, and tensions run high as the reptile staff attempts to collect blood from Cuban crocs.

A popular sea lion falls ill after ingesting a foreign object; the avian team devises a plan to increase the cock-of-the-rocks population.

A new male okapi named Magani is paired with breeding veteran Kweli who has already had several calves, but Kweli develops congestive heart failure.

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.

The TAB staff heads to Manhattan to rescue a wallaby living in an apartment; a fruit bat discovers how to spread her wings, and a trio of alligators move into their summer home.

The zoo anxiously awaits the arrival of a snow leopard called K2's fourth cub; the staff is pleased when a pair of Andean condors embrace their new enclosure, while a squirmy binturong fights his annual vaccination.

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..

Max the Camel faces new challenges as he ages; the Zoo prepares to give an injured turkey vulture a permanent home, but after healing, there may be a change of plan; Willow the Red Panda gives birth to two baby cubs.

Following surgery, Olga the ostrich is prepared to be reunited with her flock; a squirrel monkey arrives at the zoo; a crowd pleasing warthog returns.

Leo, a snow leopard rescued from Pakistan, has trouble eating because of a broken canine; the bird department works feverishly to restore a beehive for the bee-eater birds; Ambassador Center staff work with an adorable Fennec fox named Charlie.

More than 100 venomous snakes are taken from a private home; problems arise when two pronghorn fawns make their debut; a device is built for a Red River hog.

The future of the American bison depends on a high-stakes race across the country; the reptile staff have their hands full with a diamond rattlesnake that needs to be medicated orally; training a pair of cheetahs to walk the grounds of the zoo.

Located just 10 miles from New York's Times Square, the Bronx Zoo is a recognized world leader in animal care and species conservation. It houses more than 6,000 animals and has a staff of 500-plus people dedicated to the animals' care and well-being. Never before have camera crews been granted full access to the 265-acre campus, until production of the docuseries "The Zoo." The results are stories focusing on dozens of animals and experiences at the facility, and its critical mission to conserve wildlife around the world. This companion series, subtitled "Bronx Tales," presents footage not seen in original episodes.

"The Zoo: San Diego" provides a behind the scenes look at the daily lives of various species of animals and the teams that care for them. Featuring two parks, the San Diego Zoo and the San Diego Zoo Safari Park, as well as the San Diego Zoo Institute for Conservation Research, San Diego Zoo Global is home to more than 700 species and 6,500 animals. A wide range of animals are introduced, including pandas, giraffes, Galapagos tortoises, koalas, elephants, mountain lions, two baby cheetahs that are learning how to be ambassadors for their species and a flock of ostriches known as the "Spice Girls." Besides the animals, the keepers and veterinarians at both the Zoo and the Safari Park -- many of whom have dedicated their lives to caring for animals, discuss what it's like to be a part of this world-renowned zoo.

One of the largest and most popular zoos in the U.S., Ohio's renowned Columbus Zoo and Aquarium and its conservation park The Wilds, houses more than 10,000 animals on 12,000 acres. It's also the part-time home of beloved wildlife guru Jack Hanna, the zoo's director emeritus. Now, Nat Geo Wild is taking viewers inside the grounds and allowing them to experience what visitors can't: compelling, heartwarming stories, and behind-the-scenes moments and adventures. "Secrets of the Zoo" introduces both the animals and the legions of workers who create unforgettable connections between people and wildlife.

Chester Zoo is one of the most popular wildlife parks in Great Britain, attracting more than 1.8 million visitors annually. Through the use of cameras equipped with the latest technology, this program takes viewers behind the scenes of the zoo, capturing animal behavior close up, as well as the relationships the animals share with their keepers. Memorable scenes filmed over the course of the series include the birth of a baby giraffe, a pregnant viper getting X-rayed, chimps battling for dominance, and a red panda giving her partner the cold shoulder.

Carrying on late wildlife conservationist Steve Irwin's mission to bring people closer to animals is now the mission of his family. Terri, Bindi and Robert Irwin return to Animal Planet, giving viewers access to their wildlife adventures around the world and the amazing animals that continue to inspire their conservation efforts. The series features the family caring for more than 1,200 animals at the Australia Zoo; overseeing a world-class wildlife hospital, the largest of its kind in the world; and conducting high-level global expeditions.

Inside the day-to-day life of the animals and caretakers of the Bronx Zoo.

The famed San Diego Zoo is the setting for this series that showcases different species of wild animals that reside at the facility and the dedicated staffers who care for them. Grizzly bears, rhinoceroses and even armadillos are among the creatures featured on "Wild World," which provides information about the creatures' living environments and offers key facts about them. The show, which is targeted at teenagers, also includes stories about zoo-enrichment programs that help animals initiate natural behavior.

"Get Wild" showcases some of the animals that can be seen at the San Diego Zoo, one of the most famous zoos in the world. The educational series offers information about the creatures who live at the facility, including their natural habitats and unique behaviors. Topics include experts who study the ways in which orangutans raise their young and an explanation of the panda's living patterns. The series also introduces viewers to animal enrichment programs, in which members of the zoo's staff try to duplicate an animal's habits that are unique to them in the wild.

Amanda Giese eased her troubled childhood by connecting with animals. They were her best friends, her "saving grace," she says. That connection continued into adulthood, leading her to start a nonprofit called Panda Paws Rescue, whose mission is to end homelessness, abuse and neglect of all animals. Alongside Amanda's kids, Jade and Beast, and partner Gary, the family cares for animals -- primarily dogs that others have given up on -- in need and helps them find loving forever homes. Those efforts are featured on hourlong episodes, including a large-scale rescue mission to save the lives of dozens of animals that have major medical or special needs.