El zoológico de San Diego

Hippo Funani welcomes an addition and staff raise an orphaned koala.

Hyena brothers Puru and Tuli prepare to share a habitat with the lions.

A pair of rescued mountain lion cubs are ready for their new habitat. Staff celebrate when a lappet-faced vulture produces the zoo's first egg for the species. And Nikita the white rhino undergoes an intense procedure in the hope of saving a species.

After taking over the former red river hog habitat, a gazelle gives the team a big surprise. Staffers race to prepare a den when they suspect the amur leopard Satka is pregnant, and koalas are nursed back to health after being saved from the bushfires.

The zoo welcomes a pair of playful platypus' for the first time.

At Safari Park, a pair of wallabies become ambassador animals.

The Rhino Rescue Center welcomes Arthur, the southern white rhino calf. A young nyala must be hand-raised before returning to its herd, koala joeys make a big move, and Connor the Malaysian tiger struggles with strange nosebleeds.

The staff hopes for a mating match between the black rhino newcomers, Kendi and Aria. Meanwhile, the zoo cares for an abandoned beaded lizard found in a local yard, a cock-of-the-rock egg hatches, and the meerkat mob are put on a new furry diet.

Abigail the century-old Galapagos tortoise undergoes surgery.