Terri and Bindi join the team at The Australia Zoo Wildlife Hospital as they treat an incredible range of animals, including a complex koala surgery which pushes both of them beyond their limits. Robert and Chandler join the rescue unit.

It’s an exciting time as Bindi and the zoo welcome two baby echidnas, but health concerns become a major threat for one puggle’s survival. Robert has fun preparing Douglas the jabiru for his first arrival in the Crocoseum, until he goes missing.

Robert continues his father’s legacy as he faces off with Bosco, the most aggressive croc at the zoo. Bindi lends a hand when Claire the koala needs critical eye surgery, and Forest attempts to break the record for the World’s Tallest Giraffe.

The Irwins return to the Steve Irwin Wildlife Reserve to study crocodiles. It’s an epic trip as Robert leads the croc catching team for the very first time, while Bindi and Chandler reveal a life-changing announcement.

An anxious Robert looks on when Indah the Komodo Dragon meets Gili, an aggressive potential mating partner. Terri handles a mysterious lump inside Jessie the woma python, and Bindi and Chandler study coral bleaching on the Great Barrier Reef.

It’s a monumental day for the zoo as they welcome four Sumatran elephants. Robert rescues a crocodile from a suburban backyard before he and Terri secretly try to guess the gender of Bindi’s baby, but Bindi and Chandler have their own surprise in store.

Steve’s lifelong dream of breeding cassowaries, one of the most dangerous birds in the world, may become reality when 6 eggs are laid. A very pregnant Bindi continues to assist the Wildlife Hospital and Oberon the baby gator makes his Crocoseum debut.

Bindi and Chandler prepare for the birth of their daughter. See the Irwin family’s reaction to the moment Grace enters the world.

History is made at the Australia Zoo when Robert and team attempt the largest alligator capture and relocation; koala breeding takes a tough turn for Bindi and the Wildlife Hospital; Terri gives the Sumatran elephants more space to roam.

Terri responds to the call when Daniel, a very special wallaby, becomes severely injured and cannot walk; Robert and Chandler catch some waves before taking a road trip to pick up a new Komodo dragon; Bindi checks in on Tallbert the giraffe calf.

Chandler must handle a koala crisis, while Terri lends a hand to care for an influx of puggles; A turtle called Billy undergoes a critical surgery, and Bindi recruits Chandler and Robert to bake a special wombat birthday surprise.

Bindi welcomes the arrival of tiny poison dart frogs to their new home at the zoo; Terri takes charge when the crew moves Bosco out of the Crocoseum; Chandler helps a glider called Kronk.

Robert races to safety when a croc called Casper attacks during a feed; Tragedy strikes after urgent repairs begin on the Rainforest Aviary, and Bindi hand-raises a possum joey called Bonnie; Later, baby Grace receives a surprise honor.

Robert Irwin comes face to face with a great white shark for the first time ever. Following his father's footsteps, he will get as close as possible to these incredible creatures to determine which apex predator reigns supreme – crocs or great whites?

Bindi swims with Whale Sharks, assisting with research efforts on the worlds largest and least understood fish. Robert works to save an echidna that's tightly trapped under a fridge. Terri joins a close up exam on a Grizzly.

The Irwins take action when Norman, the Zoo’s favorite croc, becomes critically ill. Robert prepares a trio of tiger cubs to unite with their older brother Nelson for the very first time, and Terri welcomes five fluffy koala joeys from Kangaroo Island.

It's moving day for Acco, the zoo's biggest crocodile. All goes to plan until his mate Cassie goes into hiding as the team races to reunite the bonded pair in their new enclosure. The rescue unit fights to save a flying fox entangled in barbed wire.

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.

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, while Bindi and the wildlife hospital rescue hundreds of baby flying foxes.

Robert and Terri take to the skies to release three rescued sea turtles near the Great Barrier Reef. Bindi anxiously awaits the birth of the zoo's first tiger cub in years. Richie helps a baby wallaby in his struggle for survival.

Robert feeds 44 hungry alligators, all at the same time. Terri helps examine Kaitlyn the tiger and makes a thrilling discovery, while Bindi follows the heartbreaking story of her old friend, Zambezi the zebra.

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

Robert takes on the challenging task of relocating Bosco, the most aggressive croc at the zoo. Bindi must investigate Forest the giraffe's bad knee problem. Terri helps Harley the koala find love at the end of a difficult breeding season.

Robert wrangles Western Diamondback rattlesnakes in Arizona for the first time, learning techniques passed down by his dad. Terri helps save some of the hospital's tiniest patients: three baby feathertail gliders. Bindi chats with Occa the cockatoo.

Robert handles an aggressive wombat called Bunker, and it's moving day for a giant anaconda called Nikki; Terri helps treat hundreds of lorikeets injured by a hailstorm; Later, Robert and Chandler team up to bake a special treat for the Irwin ladies.