The arrival of a new female chimp causes upheaval at the zoo, baby otter Bo goes missing, cheetah mum Kinky Tail is on the operating table, and the meerkats steal the porcupines' food.

Tapir Jenny, who has two young offspring, falls ill. Can rhino Kifaru, who has arthritic knees, mate with younger, taller and heavier female rhino Malindi? Widowed porcupine Roxy meets a new mate.