18/20 The vet performs an emergency operation on Lily the pygmy goat.
8/20 Keepers help inoculate endangered Grevy's zebra against an outbreak of deadly anthrax.
7/20 Ben Fogle and Kate Humble present a special programme from Kenya.
6/20 Lion cubs Malaika and Jasira meet their father for the first time.
5/20 Gladys the iguana has radical surgery and bull rhino Winston is in the mood for love.
4/20 The lion cub must venture into the great outdoors - but is she too much of a scaredy cat?
3/20 Lord Bath explores his family tree and uncovers tales of adultery, murder and a ghost.
13/20 The white rhinos have a case of the trots, so Kate tries an unusual homeopathic cure.