It's a blue heeler. Australian cattle dog. They are absolutely beautiful animals and so smart. They can be a huge pain because a lot of the time, they are way smarter than their owners. They can be aggressive because they are extremely protective of their people. They are working dogs and will actually try to herd any living thing that's available. My Lacey died in February.. she came to live with me after I moved out of my parents house. I still get choked up when I see videos of them. I would love another one. Unfortunately, I don't have the time that such a smart, active, wonderful dog needs.