Which is one clue that Close Encounters of the Bear Kind is a work of nonfiction?

One clue that "Close Encounters of the Bear Kind" is a work of nonfiction is its use of factual information and real-life experiences related to bear interactions and wildlife behavior. The narrative often includes scientific insights and personal anecdotes from the author, which lend authenticity and credibility to the account. Additionally, the book may reference actual locations, events, and conservation efforts, further grounding it in reality rather than fictional storytelling.