He is a bordercollie /Austrailian shepard mix. My last dog was one too. They are very high energy, brillent, beautiful, hardly shed and their hair is as soft as feathers. It takes a person who is willing to spend time with them to make them livable but they are wonderful dogs.
They are both herders so you can NOT just throw them in the backyard while you go to work. They will distroy everything out of bordom.
I love all dogs but this mix is just perfect in my mind.