Keepers and vets work through the night with hopes for a giant panda pregnancy, and it's an anxious time as a pair of cassowaries are introduced. Meanwhile, Gelada baboon Negus goes into surgery.

There is cheeky chimp action at the Budongo Trail exhibit, the sloths get acquainted at a predictably slow pace, but there is hope for speedier results with tigers Botzman and Dominika.