When keepers introduce two tigers as potential mates, the process proves bumpy. A pair of African porcupines arrive at the zoo, requiring delicate handling. And a pregnancy check on a 3,000 pound rhino necessitates some highly specialized equipment.

The brown bears keep tearing up their exhibit, leaving zoo staff scrambling for a solution. Armani the aardvark gets treated for a tooth infection which has dampened her enthuiasm for digging. And, a group of burrowing owls prepare to move.

Trust and experience are put to the test when an elephant requires delicate veterinary treatment from her keepers. Endangered pink pigeons need all the help they can get to produce offspring. And Monty the adorable otter needs to visit the dentist.

The last polar bear in New York City is showing his age so the staff makes sure he gets all the attention he needs. A trio of red ruffed lemurs are prepped for their big debut.

A pregnant African wild dog has the staff anxiously preparing for the big day. Zoo director Jim Breheny steps in to help a keeper learn how to handle a golden eagle. And, a new tree in Jungle World gives the gibbons a new world to explore.

The ingenuity of zoo staff is put to the test as they devise a treatment for a newborn snow leopard cub struggling to walk. A group of surprisingly adorable Rodrigues fruit bats are trained for a big move.

The squirrel monkeys play hard-to-get with the Children's Zoo's keepers. A pair of Komodo dragons meet for the first time, with explosive results. And the Inca terns prepare for their first big flight.

Surgery on a silverback gorilla's broken canine reveals a more serious medical issue. Is love in the air for two Birds of Paradise, Glory and Holiday? A confiscated black-breasted leaf turtle is introduced to eligible bachelorettes. And, dozens of venomous tarantulas keep the staff on their toes.

Beloved camel Max develops a large abscess on the top of his head; a marmot prepares for her first classroom visit as an ambassador animal; a peregrine falcon found at the base of skyscraper is brought to the zoo for a health check.

Zoo staff face unexpected setbacks weaning a bright sea lion pup off her mother's milk. The bird team steps in To support a rejected curassow chick. And, a squirrel monkey pays a visit to the dentist.

A markhor goat gives birth to Andre, the biggest baby of the year; a baby bat requires human care before it can be reintroduced to its colony; confiscated lizards destined for the pet trade require urgent medical attention.

Andean bear Bouba returns from the National Zoo in Washington, D.C., to reunite with his mate, Nicole; a king cobra is treated; Blanche, a feisty alpaca, is due to give birth at any moment.

A 14-year-old otter is not its usual, energetic self; staff at the New York Aquarium move their sharks to a new exhibit; quirky capercaillies need help producing healthy chicks.

Crate training Nikita the Amur tiger in preparation for her move to Washington, D.C., proves challenging; an endangered Chinese alligator shows signs of being pregnant; staff prepare to release rare New England cottontail rabbits into the wild.

A trio of new penguin chicks are introduced to the pool for their first swim; family dynamics change when the mandrill monkey troop welcomes a new baby; a pair of king vultures are prepped for their big debut at the Queens Zoo.

Peaches, a 2-month-old warthog, charms his keepers while training to become an animal ambassador; a nervous one-horned rhino adjusts to her new exhibit; Willow, a red panda, shows signs of being pregnant.

Keepers introduce three gaur, a large species of cattle, to the rest of the herd; a sickly sambar fawn is rushed to the health center; the bird department prepares for the arrival of great hornbills.

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.

A giraffe named Mashengo journeys from the Indiana Zoo to his new home in the Bronx; keepers hand-raise endangered ducklings and release them at the Central Park Children's Zoo; love is in the air for a pair of cloud rats.

Cardiologists try to determine why the geladas are experiencing a life-threatening heart condition; Nile crocodiles are shifted off exhibit for a maintenance project; the elephant shrews are breeding.

A team tests the problem-solving skills of lions against those of snow leopards; Willow, a young red panda, is having mysterious foot problems; the bird department awaits the gender reveal of two new adjutant stork chicks.

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.

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.

A charismatic ostrich named Olga works to be reunited with her flock. Buster the squirrel monkey is introduced to the Zoo's troop of feisty females. A functionally extinct species of turtle finds new life and everyone's favorite warthog is back.

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.

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.

A rowdy, young markhor is injured and vets must treat his infected hoof. The TAB staff head to Manhattan to rescue a wallaby living in an apartment, while a fruit bat discovers how to spread her wings, and a trio of alligators move into their summer home.

A trio of abandoned puma cubs arrives at the zoo, while the staff grows concerned that Ella, the oldest rhino, is not acting herself. Meanwhile, a Caribbean flamingo is born at the zoo after nearly two decades, and Otto the stallion makes his debut.

An okapi called Magani is ready to breed and is paired with veteran Kweli to learn the ropes. Lola the blue iguana plays hard-to-get when introduced to a potential mate, and anteater Velcro shows off her talents with a new tool.

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. Endangered snakes are coupled for breeding, and Andean bear cubs meet their fans.

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

The zoo opens an endangered turtle species facility, while Malayan tigers Suhanna and Rimba struggle to breed, because Rimba seems disinterested. Needles the porcupine gets a new mate, and the Guar herd eagerly await the arrival of new calves.

It's a series of firsts when the Central Park Zoo welcomes its first-ever Atlantic puffin chick. A rhino called Penny undergoes a series of allergy tests, while an endangered species of gecko welcomes her first hatchling.

Seven "Little Blues" join the penguin exhibit and are quick to mingle with the rest of the colony. When a honey-loving grizzly slows her step, the staff grows concerned. A turtle can't seem to get along with the alligators, and a nyala calf is born.

After more than 100 venomous snakes are taken from a private home, it's up to the zoo to care for them. Two Pronghorn fawns make their debut, but problems arise that have keepers concerned, while a device is built for a Red River hog needing a challenge.

A trio of rare Dhole canines are prepared to make their cross-country journey to the zoo, and keepers anxiously await their arrival. A tinamou chick must be hand-reared, while a specialized tool is welded to extract a tusk from a charming Babirusa.

The Zoo takes audiences on a first-ever, in-depth look behind the scenes at the Bronx Zoo. With full access to its 265-acre campus, located just 10 miles from Times Square, we shine a light on a world of more than 6,000 animals and the 500-plus people who care for them.

The zoo's medical team must perform critical surgery on a bison calf born with a bowed leg; three lynx kittens are ready to explore their exhibit

A keel-billed toucan confiscated from smugglers begins a new life at the zoo; Troody the young red kangaroo has big shoes to fill; a herd of Bactrian fawns prepares to go on exhibit

Rescued harbor seal pup Sydney finds a new family at the New York Aquarium; zoo staff are challenged when a skittish Amur tiger struggles to adjust to its new home.

A gorilla must undergo a critical root canal to fix its tooth problem; a red-crested turaco chick fledges the nest; a pair of puma cubs travel to their new home at the Queens Zoo.

When Kip the young silver langur falls ill, he must be nursed back to health; Cora, the white-naped crane chick, is relocated and introduced to her potential mate

When Matthew the feisty camel develops a tooth issue, the zoo staff is determined to treat him; Ivy the babirusa is expecting for the very first time

The zoo staff works to build a relationship between a pair of Asian elephants with very different personalities; vets treat an ocellated turkey chick's foot condition

After a long road to recovery, a golden eagle is ready for its debut at the Eagle Aviary exhibit.

At the zoo and the New York Aquarium, bull sea lions Clyde and Tacoma trade places to meet a new set of girlfriends; Sifaka lemurs Gemina and Andri form a new breeding pair to help their species.

A pair of rescued Mang Mountain pit vipers move into a lush new exhibit

A snow day means playtime for the animals and hard work for the zoo staff.

Howie the wallaby moves to Arizona to meet his new mob and potential mates.