Catherine Raven: an unexpected friendship with a fox

Catherine Raven lives in a remote mountain valley in Montana. She has lived more or less alone since leaving a troubled home aged 15. She was a National Park ranger for 20 years, and gained a PhD in biology from Montana State University. One day, a wild fox turned up at the door of her remote cabin. He came again the next afternoon - and the next. Catherine began reading to him, and the pair began taking walks together. They became friends, and it was a vital connection in her life. Catherine Raven has written a memoir about the unexpected bond. It's called Fox & I: An Uncommon Friendship. She talks with Lynn Freeman from home in Montana.