Though there were several significant characters in The Curious Incident of the Dog in the Night-time, Christopher Boone was by far the most important. Christopher is an autistic teenage boy living with his father and pet rat, Toby. Because of his autism, he struggles empathizing and socially communicating with others, and finds math and science much easier to understand. He categorizes his life into Good Days and Black Days, both containing the same routine, as he gets overwhelmed by change and chaos. He comfortably goes on with his life, until he finds his neighbor's dog dead. Because Christopher's mind almost runs like a computer, he finds the unsolved mystery irresistible and is determined to put the puzzle together. As he's solving the
