Scooby-Doo the series and the billing, in an attempt to boost "Scooby-Doo"s slipping ratings. The 1979–80 episodes, aired under the new title "Scooby-Doo and Scrappy-Doo" as an independent half-hour show, succeeded in regenerating interest in the show. Lennie Weinrib voiced Scrappy in the 1979–80 episodes, with Don Messick assuming the role thereafter. Marla Frumkin replaced Pat Stevens as the voice of Velma mid-season. As a result of "Scooby-Doo and Scrappy-Doo's" success, the entire show was overhauled in 1980 to focus more upon Scrappy-Doo. At this time, Scooby-Doo started to walk and run anthropomorphically on two feet more often, rather than on
Scooby-Doo revival on Cartoon Network in 1995. Today, all manner of "Scooby-Doo"-branded products are available for purchase, including "Scooby-Doo" breakfast cereal, plush toys, action figures, car decorations, and much more. Real "Scooby Snacks" dog treats are produced by Del Monte Pet Products. Hasbro has created a number of "Scooby" board games, including a "Scooby"-themed edition of the popular mystery board game "Clue". In 2007, the Pressman Toy Corporation released the board game "Scooby-Doo! Haunted House". Beginning in 2001, a "Scooby-Doo" children's book series was authorized and published by Scholastic. These books, written by Suzanne Weyn, include original stories and adaptations of