Life of Pi tranquilizer darts while her cub escapes hiding in a bush. Parker names the cub Thirsty after his enthusiasm when drinking from a nearby river. The paperwork that accompanies the shipment of the two tigers to Pi's family's zoo in Pondicherry states that the cub's name is "Richard Parker" and the hunter's given name is "Thirsty" and his surname is "None Given", due to a mix-up with the names. Pi's father finds the story so amusing that they continue to call the tiger "Richard Parker". Brian Bethune of "Maclean's" describes "Life of Pi" as a "head-scratching combination of dense religious allegory,
Life of Pi God." The investigators then leave and file a report. "Life of Pi", according to Yann Martel, can be summarized in three statements: "Life is a story... You can choose your story... A story with God is the better story." A recurring theme throughout the novel seems to be believability. Pi at the end of the book asks the two investigators "If you stumble at mere believability, what are you living for?" According to Gordon Houser there are two main themes of the book: "that all life is interdependent, and that we live and breathe via belief." PBS has described Martel's