Here's another TV ad for the Slovakian grocery store, COOP Jednota, in which Duncho (Dunčo) the Slovak Chuvach (Čuvač) makes an appearance.
Click here to see the video: COOP Jednota TV ad - Duncho and bus bench
Click here to see the video: COOP Jednota TV ad - Duncho and bus bench
Here is a map to show the relationship between Slovakia and Hungary, and thus possibly the relation the Chuvach and the Kuvasz.
Also the Tatra Mountains in the northern part of Slovakia share a border with Poland, the home of the Polish Tatra Ovarchka or Polski Owczarek Podhalanski, another "cousin" of the Kuvasz.
Kuvasz - Chuvach - Polish Tatra Sheepdog -- all connected geographically, while still in different terrains: mountains, steppes, plateaus.
Čuvač and Dunčo are the Slovakian spelling of these words; I use the FCI.be English nomenclature of Chuvach. Also, in Slovakian, the name Duncho is spelled Dunčo.