A wildlife filmmaker I met in Yellowstone over the course of the summer and autumn is having his documentary on the wolves of the Lamar Valley aired on "Nature" next week. I recommend anybody who is interested in natural history to watch it because he has some incredible footage after filming wolves for 900 plus days over the last three years.
The link below will wet your appetite, including footage of a bald eagle snatching meat from the mouth of a coyote. The reaction of the coyote is priceless.
http://www.pbs.org/wnet/nature/wolves/index.html