Aged Sumatran tigers face critical health checks. Sakti's dental surgery goes into crisis when he suffers cardiac arrest. Separately, aged capybara Carlos gets a check-up, and a horticulturist hunts 10,000 termites for the echidnas.

At Taronga, silverback Kibali faces challenges from his increasingly bold son MJ, disrupting the gorilla troop. A sea lion swap sees Moby return and Storm relocated, but getting Storm into his crate is tough. Plus, Taronga's elephants get new, large enrichment toys.