片长87分钟，包括40分钟正片和47分钟花絮，目前介绍不多，好不容易搜索到如下内容，英文的就凑合看吧：

http://www.blu-ray.com/movies/movies.php?id=729


- Making Of Wolves
- ThefSurvival Of ThefYellowstone Wolves

Take a journey into the world of Wolves with intimate and rarely seen footage of one of North America's greatest predators: Canis Lupis. A moving soundtrack of Native American music adds a deeply poignant element to the film and propels viewers on an inner quest of their own during this remarkable story of one of the world's most tenacious species and our closest fellow predator. Filmed in locations including Yellowstone National Park, Montana, Idaho, Alaska and Quebec, Wolves offers hope and inspiration, a look at the good that people can do when they care enough to correct some of the mistakes that threaten the health of the natural world.