True Wolf (2012)

When Montana couple Bruce Weide and Pat Tucker made the decision to adopt an abandoned wolf pup in 1991, they had little idea of how their new houseguest named Koani would end up shaping their lives. After a lengthy trial-and-error process of learning how to share space with a territorial predator, they developed a healthy respect and profound appreciation for the line separating "man's best friend" and White Fang.