I was wondering after reading a story on a Denver TV stations web site about the breed of sheepdogs that are being used now to protect the sheep. Here is the story.
I personally have ran into them a few times while out scouting and can tell you that they are quite protective. I have even had a couple chase me back to my truck when I got out to open a gate on BLM land with the herd of sheep being fairly close but not close enough to get through the gate while I had it open. It seams that now the dogs are starting to chase or at least scare tourist down around Silverton but I had it happen up on the Flat Tops above Glenwood Canyon, and another time above where I live.