The Scooby & Scrappy-Doo/Puppy Hour The Scooby & Scrappy-Doo/Puppy Hour The Scooby & Scrappy-Doo/Puppy Hour is a 60-minute Saturday morning animated package show co-produced by Hanna-Barbera Productions and Ruby-Spears Enterprises and broadcast on ABC from September 25, 1982 to December 18, 1982. The show contained segments of "Scooby-Doo & Scrappy-Doo" (Hanna-Barbera), "Scrappy & Yabba-Doo" (Hanna-Barbera) and "The Puppy's New Adventures" (Ruby-Spears). The first half-hour consisted of a 7-minute "Scrappy & Yabba-Doo" episode placed between two 7-minute "Scooby-Doo & Scrappy-Doo" episodes followed by a 30-minute episode of "The Puppy's New Adventures" in the second half-hour. The Scooby/Scrappy-related shorts were written, storyboarded and voiced at Hanna-Barbera, but
Scooby-Doo the Night" on a flight to one of the development meetings, and decided to rename the dog "Scooby-Doo" and re-rechristen the show "Scooby-Doo, Where Are You!" The revised show was re-presented to CBS executives, who approved it for production. The first episode of "Scooby-Doo, Where Are You!" "What a Night for a Knight" debuted on the CBS network Saturday, September 13, 1969. The original voice cast featured veteran voice actor Don Messick as Scooby-Doo, radio DJ Casey Kasem (later host of radio's syndicated "American Top 40") as Shaggy, actor Frank Welker (later a veteran voice actor in his own right)