This photo from Enikő of Dunamenti Jeles Kuvasz Kennel in Hungary showcases the Kuvasz's distinctive white, thick, wavy fur; black, almond-shaped eyes; and the head's "smooth line to a hardly perceptible stop and a long, straight nose."
Info from: Pál Sárkány and Imre Ócsag, Hungarian Dog Breeds, Budapest, Hungary: Corvina Kiadó, 1977, 2nd ed. 1986, p. 101, 103.