A behind-the-scenes look at what it takes to run the Taronga Zoo Sydney, Australia's largest zoo, located on the shores of Sydney Harbour.

A behind-the-scenes look at what it takes to run the Taronga Zoo Sydney, Australia's largest zoo, located on the shores of Sydney Harbour.

A behind-the-scenes look at what it takes to run the Taronga Zoo Sydney, Australia's largest zoo, located on the shores of Sydney Harbour.

As the largest bushfires on record devastate the country, Taronga Zoo vets take the battle to save Australian native wildlife to the front line.

Taronga staff throw a surprise party for the zoo's oldest resident, Esmerelda, the 103-year-old Giant Aldabra Tortoise.

A virus threatens to wipe out an entire species of snapping turtles. Meanwhile, Taronga vets are stumped by an animal's mysterious health problem.

A pregnant lemur is badly injured in a fight and Taronga's vets have grave concerns for her unborn baby. Meanwhile, Taronga welcomes a brand-new species to the zoo, as 5 of the world's largest rodents arrive from New Zealand.

For the first time in ten years, Taronga vets get up close to a silverback gorilla.

Taronga Zoo's keepers try to reign in a very randy red panda! Vets and keepers work together to attempt a procedure rarely done at Taronga and staff teach a injured owl how to fly again.

Zookeepers have noticed that their silverback gorilla Kibali, has been unwell. But giving a nearly two-hundred-kilogram gorilla an injection is not as straightforward as it sounds.