The Cesky Terrier was created by a Czech breeder, František Horák, in 1948, as a cross between a Sealyham Terrier and a Scottish Terrier, to create a terrier suitable for hunting in the forests of Bohemia. Although not a trained scientist, Horák worked for many years as a research assistant at the Czechoslovak Academy of Sciences and used knowledge gained there in his dog breeding. Czechoslovakia was ruled by a communist regime at the time; when Horák's dogs became more popular around the world, he began to receive a large volume of mail from outside the country, which earned him the attention of the secret police. Horák died in 1997.