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 of Kids' WB on The WB Network and its successor, The CW Network, from 2002 until 2008. "Scooby-Doo! Mystery Incorporated" aired on Cartoon Network from 2010 to 2013, and "Be Cool, Scooby-Doo!" aired on Cartoon Network from 2015 to 2018. Repeats of the various "Scooby-Doo" series are broadcast frequently on Cartoon Network's sister channel Boomerang in the United States as well as other countries. In 2013, "TV Guide" ranked "Scooby-Doo" the fifth greatest TV cartoon. In 1968, parent-run organizations, particularly Action for Children's Television (ACT), began protesting what they perceived as excessive violence in Saturday-morning cartoons. Most of these shows