Secrets of the Zoo: Down Under Season 5: Episode Guide & Ratings

Lioness Maya has a fractured tooth, leading to a potentially life-threatening abscess. Taking a 160-kilogram cat to the dentist requires a team effort.

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.

Abandoned koala joey Gracie proves to be the cutest possible housemate to foster mother and keeper Annii, who has taken on her 24-hour care with a maternal flair.

Jacob learns about managing the coexistence of savannah animals; zoo staff face challenges during a health check of two kangaroos.

All-hands-on-deck to try and save a six-month-old platypus; a breeding pair of Galapagos tortoises; in a breeding attempt with a little more speed, cheetah Liberty is tested for ovulation after mating.

The team undertake one of their biggest challenges and do health checks on all 21 chimpanzees; in Dubbo, a lace monitor with a suspected head injury is brought to the wildlife hospital.

A behind-the-scenes look at running Taronga Zoo Sydney, Australia's largest zoo, located on Sydney Harbour's shores.