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! and the Monster of Mexico end, everybody enjoys the Day of the Dead festivities. "Scooby-Doo! and the Loch Ness Monster" was released on June 22, 2004. Scooby-Doo! and the Monster of Mexico Scooby-Doo! and the Monster of Mexico is a 2003 direct-to-video animated comedy mystery film; the sixth in a series of direct-to-video films based upon the "Scooby-Doo" Saturday morning cartoons. It was released on September 30, 2003, and it was produced by Warner Bros. Animation. It is one of two Scooby-Doo movies released in 2003 (the other being Scooby-Doo and the Legend of the Vampire) that briefly brought back the original voice cast from