A behind-the-scenes look at the work carried out by keepers at Dublin Zoo, which is home to more than 600 animals. An adolescent silverback gorilla that is causing trouble with its father is transported to London Zoo to replace a male that died recently. Reptile expert Garth de Jong also examines a Nile crocodile, and a white rhino is ready to give birth
Keeper Gerry Creighton takes round-the-clock care of a rare snow leopard's cub after the rest of its litter dies. Peter Phillips notices one of the fruit bats has a broken wing and is finding it difficult to feed, leaving vet John Banbridge to decide whether an emergency amputation is necessary. Kesho the gorilla also settles into its new home at London Zoo
Helen Clarke Bennett and her team await news about the health of a baby giraffe, and Curator of Horticulture Stephen Butler explains the importance of plants, flowers and trees to the zoo. Susan O Brien keeps watch on a tapir that goes into labour prematurely, while keeper Joe Byrne retires after 40 years
Avian expert Peter Phillips checks on the Humboldt penguins as they enter their new enclosure, which is modelled on their native habitat, the sandy beaches of Peru and Chile. Ciaran MacMahon discovers a network of tunnels in the wolf pen that runs dangerously close to the perimeter fence, and Gerry Creighton notices a mysterious lump on the breast of a Siamang gibbon
Avian expert Peter Phillips offers an insight into the lives of the Chilean flamingos, and follows their progress through the breeding season. Gerry Creighton prepares a Sumatran tiger for its journey to France, where it will hopefully find a mate, and the ring-tailed lemurs explore their new enclosure
Garth de Jong examines the zoo's breeding group of Waldrapp ibises, which are vital to the future of the critically endangered species. The keepers also carry out tests on a new male pygmy marmoset, which is the world's smallest type of monkey, and a giraffe develops the same abnormality in its hooves that killed its mother
Ciaran MacMahon helps a male African hunting dog that has being injured during the mating season, and reptile expert Garth De Jong discovers a clutch of eggs in the leopard tortoise habitat. Susan O Brien is delighted by the births of two pygmy marmosets, and there is an update on the Waldrapp ibises
The keepers tend the gila monsters injured during the reptiles' mating season, and the red panda gives birth to a pair of cubs. Plus, the zoo vets perform a series of health checks on the macaques, and Alice keeps an eye on an Indian black buck antelope's pregnancy
Veterinary nurse Aisling Greene learns how to hand-rear cheetah cubs in South Africa, while back at Dublin Zoo, a female Western Lowland gorilla is scheduled for tests when it stops eating. There is also an update on macaque island, where some of the females are pregnant
Ciaran MacMahon grows concerned that the snow leopards are not breeding. James Creighton and the team are excited about the prospect of a baby gorilla being born, and a new female arrives at the tapir house