Lots of good information, but it grows repetitive after a while and I had a hard time remembering which wolf was which since they all have numbers instead of names. The author also seems only interested in the behavior and interior thoughts of male wolves, despite mentioning three quarters of the way through that actually female wolves make most of the pack decisions, like a complete afterthought. Learned a lot about wolf behavior but came away feeling like there were a lot of gaps in the study.