Owczarek Podhalanski

What are the big white dogs that guard sheep?

They are related to several other large, white, European livestock guardian dogs (LGD), including the Maremma Sheepdog (Italy), the Kuvasz (Hungary), the Akbash (Turkey) and the Polish Tatra Sheepdog or Polski Owczarek Podhalański, and somewhat less closely to the Newfoundland and the St. Bernard.