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.

Rosie the giraffe is ready to give birth; Robert has a bloody encounter with a wild python that has entered an enclosure; Terri helps the keepers wrangle Chief the Tasmanian devil.

The family makes the annual trip to the Steve Irwin Wildlife Reserve to capture, study and release wild crocodiles, a mission started by Steve and Terri that provides research vital to the protection of Australia's apex predators.

Robert travels to Australia's Great Barrier Reef to help conduct research on manta ray; the Zoo's Rescue Unit, Wildlife Hospital and Volunteers team up to save a baby wallaby struggling to survive.

Bindi and Chandler prepare for the happiest day of their lives. Weeks before their wedding day, the coronavirus pandemic causes them to make difficult and drastic changes to the wedding of their dreams, but in the end love prevails.

Terri helps determine if Caballe the rhino is pregnant, while Robert hopes to get the zoo's Aldabra giant tortoises to mate

Wes and Robert remove eggs from the nest of saltwater crocodiles Terra and Bosco in a nerve-wracking but necessary venture; Bindi tends to the training of otters Percival and Daisy; Terri makes a zoo volunteer's dream come true.

The Australia Zoo's alligator snapping turtles need a health check, and it's Robert's job to protect from their fierce bites; Terri and Bindi welcome seven new lemurs from the United States; the Rescue Unit must save possums caught in a chimney.

Terri welcomes Mballa, a new cheetah cub from South Africa, to the Australia Zoo family; Robert sets out to save a stranded platypus and Bindi prepares to meet Bert the Koala Joey as he emerges from his mother's pouch for the first time.

Carrying three baby kangaroos and an emu, the Irwins caravan into the Australian Outback to release the animals on Mourachan, their giant wildlife conservation property. Plans shift when they discover more animals in need of rescue along the way.

Robert wrangles Utah, a venomous 12-foot king cobra; Dr. Amber visits Tandora to care for wild koalas; back at the zoo, an old injury flares up for Bruce the brolga, a bird that has been in the Irwins' care for 26 years.

After months of croc wrangling training with Steve Irwin's best friend Wes, Robert, Steve's son, takes the final step in his journey to feed Graham, a huge crocodile at the zoo's famous Crocoseum.

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.

Terri returns to her hometown in Oregon to help Brady, a cougar in need of a vital health check. At the zoo, Robert is on a mission to rescue Oscar, a small bird with a big attitude, and Bindi bathes an echidna with bad skin allergies.

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.

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.

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.

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.

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.

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 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.

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.

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 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.

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.

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 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.

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.