Scooby-Doo and Scrappy-Doo - Season 2 - Eps 5: The Old Cat and Mouse Game
The gang are visiting the Tibetan Mountains and come across a Cat Man and his gang of evil felines. The Cat Man throws Shaggy, Scooby and Scrappy into the shrinking water fountain reducing them to the size of mice. In their tiny form, the three manage to eventually push the Cat Man into the shrinking water fountain and then escape. Once away from the Cat Man's hideaway the three return to their normal size.
About Scooby-Doo and Scrappy-Doo

Title: Scooby-Doo and Scrappy-Doo
First Air Date: 1979-09-22
Last Air Date: 1982-12-18
Status: Ended
Rating: 7.5/10 (from 317 votes)
Language: EN
Seasons: 4
Total Episodes: 115
Network: ABC
Genres: Animation, Mystery, Comedy, Family, Kids
Production Companies: Hanna-Barbera Productions, Ruby-Spears Enterprises
Synopsis
Everyone’s favorite mystery-solving Great Dane is here to find clues, along with a little help from his energetic nephew and four human companions.
Cast

Casey Kasem
Shaggy Rogers (voice)

Don Messick
Scooby-Doo / Scrappy-Doo (voice)