These LGDs are working at the Imperial Stock Ranch in Oregon.
About the family of Livestock Guardian Dogs...
“To this day flocks are guarded in the hills of Asia, Europe and Africa* by powerful, robust dogs that are neither clumsy nor pacific. Despite the distances that separate them these breeds have much in common, and the Kuvasz is a member of this extended sheepdog family.”
From: Dr. Tibor Buzády, Dogs of Hungary, trans. Bernard Adams, Budapest, Hungary: Nóra Kiadó, 2002, p. 90.
*(and now also in North America, South America and Australia)