"The zoo is nearly empty as Joan and her four-year-old son soak up the last few moments of playtime. They are happy, and the day has been close to perfect. But what Joan sees as she hustles her son toward the exit gate minutes before closing time sends her sprinting back into the zoo, her child in her arms. And for the next three hours--the entire scope of the novel--she keeps on running. Suddenly, mother and son are as trapped as the animals. Joan's...

The gorilla in the story is an unobservant zookeeper is followed home by all the animals he thinks he has left behind in the zoo.

Eleven-year-old Ant, stuck in a family that she does not like, copes by pretending that her "real" parents are coming to rescue her, by loving her dog Pistachio, by volunteering at the zoo, and by bending the truth and telling lies.

After becoming the zoo's most popular student ambassador, Ana Wright, twelve, is starting to love her life when Ashley, her archenemy from school, volunteers at the new aquarium, and Ana finds her life turned upside-down again.

Rescue dog Lily helps her owner Maggie Rosie find a missing family of Arctic foxes that escaped their cage at zoo.

Teddy Fitzroy must solve the crime of the kidnapped rare and expensive panda, Li Ping.

Twelve-year-old Teddy investigates when a popular Texas zoo's star attraction--Henry the hippopotamus--is murdered.