The Zoo: San Diego Episode Rating Graph

After six years away, Mek the tiger returns to the Zoo. Two shy tree kangaroos, Spike and Polly, meet for the first time. And, with the Children's Zoo under construction, the keepers have to move over 100 animals, including a herd of reluctant goats.

Mkhaya, the youngest baby elephant in the Safari Park herd, learns to use her trunk. Will Alba the Andean bear become a first-time mom? Zoo vets examine Mandazzi the gorilla, and Jeff the snake chaser looks for he elusive costal patch nose snake.

A baby klipspringer is born on one of the coldest nights of the season and is miraculously nursed back to health. The California condor team at the Safari Park goes to unbelievable lengths to save this highly endangered species.

There will be no peace in the world for the hamadryas baboons until Impo finds his mate; luckily, the San Diego Zoo keepers have a plan. Two young cheetah cubs are training to become animal ambassadors with the help of their experienced canine guide.

The Zoo says goodbye to beloved pandas Bai-Yun and Xiao Liwu as mother and cub prepare to return to China. Tembo the retired "Hollywood" elephant tries traditional Chinese medicine for her arthritis. The Butterfly Jungle gets colored for the season.

Hunter the koala is ready for a mate. Jaws the Galápagos tortoise isn't feeling well, and the zoo staff works to bring him out of his shell. The Safari Park has not one but two baby giraffe calves that need to be hand-reared simultaneously.

A southern white rhino is pregnant with a calf that could be key in saving a species from extinction; Connor the Malayan tiger has tooth trouble; a new bird keeper learns to feed the shoebill; polar bears exercise their hunting skills on live prey.

Koala joeys Boomeri and Noorundi become roommates.

A gazelle surprises the staff after moving into the former hog habitat.

When lesser flamingo eggs and chicks are being preyed upon, the team makes a nerve-wracking decision; Wallaby Thelma and her joey Everest become ambassador animals; a new perch is created for Stuart, the young fishing cat.

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

A pair of rescued mountain lion cubs are ready for their new habitat. Plus, a white rhino undergoes an intense procedure in the hope of saving the species!

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

Safari Park keepers prepare Aria the rambunctious black rhino for her new life on the open African Plains exhibit. Zoo staff cares for 15-year-old legend M'bari the lion and his mate, Etosha. A vulture chick learns to eat from a surrogate puppet.

Abigail the century-old Galapagos tortoise undergoes surgery.

In Kenya, a team oversees the results of an innovative milk formula developed for elephant calves. A hippo called Funani welcomes her bundle of joy, and Omeo, the orphaned koala joey, gets a second chance at the zoo.