In James Patterson's book "Zoo," the story explores a series of mysterious animal attacks around the world, leading to a global crisis. The novel combines suspense and thriller elements as characters try to uncover the reason behind these violent behaviors and seek to prevent further chaos.
The story features various characters wearing distinctive gear, such as khaki utility vests, which symbolize practicality and readiness. Open portmanteaus are also mentioned, highlighting the characters' preparedness and the book’s themes of survival and investigation.