Australian Cattle Dog. That's what they're called. Queensland Blue Heeler is the fancy yuppy name. ACD. That's what they really are. If you've looked on my Flickr page, you've probably seen pictures of Chili. If not, shame on you.
Chili dog is a decendant of the Norse myth, Loki, a mythical being of mischief. At the very least, she's decended from his dogs. She's a handful, but an incredible joy.
Here's a video of another ACD. Enjoy: