Natasza in Netherlands shares this photo of her Podhalaners, also called Polish Tatras, playing.
"The Polish Tatra Sheepdog, which sometimes goes by the names Owczarek Podhalanski and the Polish Mountain Sheepdog, originated in Podhale, in the Tatra Mountain area of Poland, hence the breed's name." See more information at the Polish_Tatra_Sheepdog Wikipedia site.
