Tatiana and Tonghua, Siberian tigers, are introduced to each other for the first time. Tatiana has never been introduced to a male before. Simon is a tamandua, a South American anteater. He's being moved into a new home because he wrecked the last pen he was in. Patsy is the matriarch of the zoo's African elephant herd. Lately she's been acting out of sorts. Today Barb Luciano, the young elephant keeper, has to get the crafty old matriarch to sit still for a blood test that could help the zoo figure out why she's not been herself.

Today's a big day for the gorillas. Their old exhibit is being torn down in preparation for a new gorilla rainforest and they have to move into a temporary home. It will be up to the keepers, Vanessa Phelan and Dianne Devison, to convince them that their new home is safe and gorillas hate change. Now that the Siberian tigers, Tonghua and Tatiana, are acquainted, it is time to make tiger babies. Today Tatiana is in heat and Tonghua is re-introduced to her.

Karen Hamilton has transferred from the tigers to the birds of prey. Today she gets to work with Wambli, the bald eagle, for the first time. Wambli will need a lot of work to trust her new keeper and Karen will need a lot of time to trust Wambli. Today, they get acquainted. Patsy the elephant is still not behaving, and Barb Luciano, her keeper, decides it's time to go back to basics with their training. It's important to create a positive atmosphere between Patsy and Barb again.

The troubles with Patsy have come to a head. Patsy is refusing to come in at night and she's not letting any of the other elephants come in either. Barb Luciano, the young elephant keeper, has to solve the problem. Zoo vet, Dr. Graham Crawshaw, has been called to look at Charles the silverback gorilla. He will have to decide whether to operate on the great gorilla's tooth. He also must determine whether it is safe to anesthetize Charles, considering his weight and age.

Today's the big day for Charles. He is having his operation and it is a huge production. Charles is too large to move to the health centre, so they build an operating room in the gorilla house and bring in a team of medical experts to operate on the ailing gorilla. Tahra Collins is a summer worker at the zoo who wants to eventually work here full-time. Today she is learning how to catch and weigh the Tasmanian devils. At the zoo summer camp a young camper named Eric has learned the mating call of the male Indian rhino. Today he will try it out on the female rhino.

Twiga, one of two adult female giraffes at the zoo, is about to give birth. When the keepers arrive in the morning, the dramatic delivery has already begun. Now all the keepers can do is wait and let nature take its course as they watch the drama unfold. Jaffar is normally a placid and friendly Bactrian camel. But today he has two problems: he has a scrape on his leg and is limping and worse, his least favorite people at the zoo are coming to see him, the vets. Jaffar is spitting mad and the vets are his target.