 Petito played minor roles in some memorable commedia all'Italiana movies directed by the likes of Dino Risi and Mario Monicelli in the late 1950s and early 1960s, often appearing alongside actors such as Nino Manfredi, Alberto Sordi, Peppino De Filippo, Anna Maria Ferrero, and Totò.Although never a leading actor, he made a number of small appearances as character actors alongside Italy's leading film stars in films throughout the early to mid-1960s and is arguably best known in world cinema for his role as the store keeper in the Sergio Leone classic Spaghetti Western film "The Good, the Bad and the Ugly" in 1966.His roles ranged from storekeepers and cobblers to priests and homeless men.