A couple quick vid clips that I found of interest that may interest you also.
First clip is from Stanford University in the Bay Area of California. Notice two things..... first is how there is a healthy population at the urban fringe in this area (They look really healthy and well fed!) and second, the tree mounted video/broadcast system the investigators are using... http://www.youtube.com/watch?feature=pl ... ngOhoNPU#!
Second clip is from a a TV report of a large cat attack in, I think, Illinois. Sounds to me like it was a very young animal or a female just trying to get him away from the kittens. http://www.youtube.com/watch?v=PEsa8xmmtbU. It didn't appear to me to be a "hunt" attack. He wasn't injured enough

Cheers
NoPolys