The zoo's Sumatran orangutans are recovering from the horrific fire that engulfed their habitat in December 2018. Rothschild's giraffe Dagmar gives birth, but her calf struggles with its first steps.

Red panda Jung is losing weight and no one knows why. Mandrill Ludo gets over-friendly with his dad's girlfriend when his dad's at the vet's. Plus: tigers, and penguins.

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.

Hornbills survived a fire that swept through their home, but it may have derailed their plans for chicks. Meerkat matriarch Huskie seems to have lost her breeding instincts. Sun bear Milli has her paws full bringing up her daughter Kyra.

Grumpy elephant Thi is expecting a baby. The chimps battle for dominance. Red panda Nima gives her partner Jung the cold shoulder. And the meerkats prove they're not as loveable as they first seem.

Rothschild's giraffes Mburo and Mojo miss out on their Christmas treat. Sparky is a new camel arrival. Mascara barb Clark has a date with three females named Kourtney, Kim and Khloe. Red panda Nina gives birth to twins Huey and Tiang.

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.

The keepers are busy making gifts for the animals but there's chaos when the chimps seek out their parcels. Will dwarf mongooses Cooper and Mini have new babies before Christmas? Plus rhinos and ants.

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.

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?

Andean bears Lima and Madidi aren't getting on. Giant otter couple Diego and Icana have never mated; can new male Tarubu relight Icana's fire? And two butterflies get drunk on fermented fruit.

Keepers spot that Asian short-clawed otter pups are developing bald patches, threatening their waterproofing. Plus, Caribbean flamingos, Asian elephants and dik-dik antelopes.

Inseparable penguins Rud and Spike have been a couple for 15 years. But Rud's arthritic hip could be affecting his quality of life. The tigers move house, and a tarantula risks his life to reproduce.

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.

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?

Adolescent babirusa Tolo has a hoof problem. Rock hyraxes Daissie and her partner Nungu are expecting their eighth litter. At the reptile house, the Bermuda skinks have a ferocious approach to mating as Poptart meets Sharkface.

The giraffe family have a new arrival. Frog keeper Pip creates a love den to try to get endangered frogs in the mood to lay eggs. And the aardvarks wreak havoc by night.

Sun bears Toni and Millie have relationship problems. Critically endangered eastern black rhino Zuri gives birth to baby Ike. Otter Annie has three new pups. And camel Shan-shan is unwell.

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.

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.

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.

A pig goes on the run. Giraffe Narus is being moved to another zoo, but getting him into a horsebox isn't easy. And can the keepers encourage mono-browed fish Noel Gallagher and Frida Kahlo to mate?