Lady and the Tramp is a 1955 American animated romantic musical comedy film produced by Walt Disney and released to theaters on 22 June 1955, by Buena Vista Distribution. The 15th film in the Walt Disney Animated Classics series, it was the first animated feature filmed in the CinemaScope widescreen film process. Based on Happy Dan, The Whistling Dog by Ward Greene, Lady and the Tramp tells the story of a female American Cocker Spaniel named Lady who lives with a refined, upper-middle-class family, and a male stray mutt named Tramp. When the two dogs meet, they embark on many romantic adventures. A direct-to-video sequel, Lady and the Tramp II: Scamp's Adventure, was released in 2001.