Two of Chester Zoo's zebras are about to give birth. Meanwhile, lioness Kumari seems to be losing interest in her partner, Iblis. And two of warthog Magnum's children are becoming hard to control.

Kendari the babirusa is pregnant, but otters Wallace and Annie keep throwing stones at her house. Next door, orangutan Willie is struggling to impress females Sarikei and Leia.

Penguin chick Munch fights for his life when there's disease in the colony. When young male tortoise Football muscles in on 71-year-old Bert's harem, the keepers bring in two Swedish female tortoises.

Oana the anoa and capybara Lochley both give birth. Tiger mum Kirana's sons are being moved to other zoos to start their own families. Young monkey Rocky won't pay attention to his mum's life lessons.

Four of Chester's orangutans go missing. The dominant female meerkat faces a power struggle with her own daughter. Can bull elephant Aung Bo help provide a baby to keep lone youngster Nandita company?

Can mantis Bruce survive mating with deadly Natasha? Rhino couple Beni and Asha are reunited after four years apart. Giant anteater Pedro falls ill. Bald ibis chick Britney is critically underweight.

Young giraffe mum Tula gives birth, while this year's brood of penguin chicks face the ordeal of joining the main pool, where they must compete for fish with the adult penguins

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

Young elephant Nandita isn't happy when her half-sister is born. Bush dog Franco has got his sister-in-law pregnant. Rhino beetle Sheldon has a damaged wing case; can he impress female beetle Alice?

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.

Rare okapi Stomp injures K'Tusha with his horn when he tries to mate with her. Two African painted dogs compete to impress two new females. Plus: turtles and cassowaries.

Mr Parsons the chameleon meets a new mate, Daphne from Paris. Young giraffe Murchison faces the great outdoors for the first time. And another baby elephant is born.

Chameleons Charles and Eddie try to impress new arrival Ruby. Orangutan sisters Emma and Subis are expecting babies by male Puluh at the same time. The aardvarks are making the new meerkats anxious.

African painted dog K'mana is pregnant with Chester's first ever litter of this endangered species. Meanwhile, can atlas moths Dave and Simon find mates during their five-day lifespan? Plus: okapis.

Giraffe Orla is due to give birth. Orangutan baby Tombol tests his luck with the gibbons. Overconfident ibis chick Professor X gets into trouble. Can a timid sengi take over his dad's breeding duties?

Young orangutan Tripa is half the size of other orangutans his age. He relies on his mum for everything but can he become independent when she has a new baby? Plus: penguins, beetles and painted dogs.

Spider monkey Kiara seems more interested in hanging out with the youngsters than looking after her baby. Baby capybara Henry enjoys having the attention of all the female capybaras.

The keepers struggle to transport a suspicious warthog and a giraffe. Caiman lizard Gary keeps diving into the pool headfirst, even when it's empty. A baby gibbon is a passion killer for its parents.

The keepers think that pregnant elephant Thi is three months overdue. Rampant giraffe Meru relentlessly chases the females in his herd. Plus: anteaters and clownfish.

Chimp Zee Zee gives birth to a daughter. Elderly chameleon Mr Parsons has a date. And Gaston the banteng bull has made three females in his herd pregnant.

Young tapir Solo is moving to a new zoo. Pregnant rhino Asha goes into labour at night. Mantis Minnie is looking for a sexual partner, but female mantises have a bad habit of eating their partners.

Young meerkats Beagle and Huskie become parents for the first time. And can painted dog Ville look after his seven adolescent pups on his own while the vets check up on their mum?

Bush dog Mana is pregnant. There's a power struggle on chimp island. Otter Wallace is struck down by a mystery illness. And is romance in the air for wattled cranes Wilma and Ivan?

Red panda Nima's new mate, Koda, chases her up a tree. Baby meerkat Junior is struggling to get enough food. And a shy penguin isn't socialising with his colony.

Tortoises Burt and Terrance, who've been best mates for 70 years, compete for the affections of breeding female Smooth Sides. Pregnant okapi K'Tusha is due to give birth. Plus: vultures and elephants.