Crap. I posted the wrong link. That's what happens when I try to do too many things at once.
Here is the video:http://www.youtube.com/watch?v=PRQbSdMXBk0
Tina, it is the one were they saw a change in color as well as other physical traits (retaining floppy ears longer, change in leg length, etc) when breeding for more friendly foxes. There was a parallel grouping where they bred for aggressive traits. They have done quite a bit of work with the genetics of these animals and are beginning to isolate the genetic codes responsible for tameness.