 Džumhur attended classes at the Law Faculty, but soon left and later finished his studies at the Art academy in Petar Dobrović's class.During the World War II, Džumhur's younger brother was killed in 1945.Džumhur published his first caricatures in an army magazine in 1947, and very soon became one of the most prominent illustrators in Yugoslavia, publishing his caricatures in the country's best selling newspapers and magazines, such as "Politika", "Borba", "Oslobođenje", "Jež", "NIN", "Danas" and many others.