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.

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.

Two adorable tiger cubs have outgrown their keepers and need to move to the adult exhibit. A gorilla receives pioneering treatment to curb his worsening eyesight. And a passionate keeper plays matchmaker to a peculiar pair of birds.

A tomistoma, a freshwater crocodilian, stops laying eggs and needs immediate care. The veterinary team has to rescue a baby antelope that isn't getting the care it needs from its mother. And Mert the Goose takes a field trip.

The future of the American Bison depends on a high-stakes race across the country. Reptile staff have their hands full with a diamond rattlesnake that needs to be medicated orally. A pair of cheetahs are trained to walk the grounds.

The Zoo's huge male sea lion is in a rut, & staff need to move the young males before he becomes territorial. The vet team comes up with a solution to repair Dinky the Flamingo's broken ankle. Feeding a rock python proves challenging.

The birth of a little blue penguin causes a sensation at the Bronx Zoo. The veterinary team scrambles to figure out what's wrong with Snowball the snow leopard. And the exhibits team designs a home for the newly arrived blue iguana.

To help love bloom between 2 kiwis, zoo staff build an elaborate hut into which they introduce a pair of potential mates. When a King Cobra arrives at the zoo, keepers have to train him to move from the exhibit to a holding pen.

Leo the snow leopard is having trouble eating because of a broken canine. The bird department works feverishly to restore a beehive for the bee-eater birds. And Ambassador Center staff work with an adorable Fennex fox named Charlie.

Zoo staff journey to east Africa to return to the wild thousands of toads they helped rescue from extinction. Utu, the test-pilot giraffe, tries out a new piece of equipment. And the bird department works to save millions of birds.

See how a slurry is prepared for a fledgling of baby penguins, then watch them gobble it up!

Queens Zoo keepers head out for a midnight study to find out what makes their zoo such a hot bed for bat activity.

Senior keeper Kris Theis shows us how the zoo prepares bloodsiciles for tigers using animal blood.

Join the zoo's animal commissary keepers on their night shift as they show how they manage and deliver thousands of pounds of food and feed needed for daily operation.

Officials from the Bronx Zoo and Wildlife Conservation Society joined thousands of others to protest the ivory trade by crushing more than two tons of goods made out of elephant tusks.