Thanks to Alice Muir of Achalone for the information.

Alice Muir has been working with sheep since childhood, starting on her parents' farm. More recently, she has been managing 20000 acres and 4500 breeding ewes. She says sheep dogs are not only a hobby and a passion but she couldn't do her job without them. Alice breeds and trains sheepdogs, and offers shepherding services: Caithness Shepherding Services.