My wife and I have become dog nuts over the past few years. She has always had dogs, I however came to the marriage being very afraid of dogs. Well, you know you can get all sorts of competitions for these animals. Apparently, Agility isn't challenging enough for the shelties and border collies. While our Leonbergers are pretty bright, they certainly don't have the same level of energy, or desire to please as some breeds.
If you have a dog like a sheltie, you do need to keep their mind engaged. Although ... Dancing is not the way I would do it.
Thanks. Mike