I was just looking for the same episode! I remember watching some of it when I was much younger, but I could never finish it, as it was on late on CN.
Well anyway I think this is it: Scooby-Doo Meets the Boo Brothers
Hope it is right! Enjoy watching it though ;)
Norville "Shaggy" Rogers
its an episode called the curse of the collar.
The "What's New, Scooby-Doo?" episode "It's All Greek to Scooby-Doo" has a villain who used a centaur disguise. There's a real centaur in "Scooby's Escape from Atlantis" (in "The Richie Rich/Scooby Doo Show", an episode with just Shaggy, Scooby and Scrappy).
The episode is "Jeepers, It's the Jaguaro!" of "The Scooby-Doo Show".
The first episode was "What a Night for a Knight".
Norville "Shaggy" Rogers
its an episode called the curse of the collar.
The best Scooby-Doo episode is the Harum Scarum Sanitarium
The "What's New, Scooby-Doo?" episode "It's All Greek to Scooby-Doo" has a villain who used a centaur disguise. There's a real centaur in "Scooby's Escape from Atlantis" (in "The Richie Rich/Scooby Doo Show", an episode with just Shaggy, Scooby and Scrappy).
The episode is "Jeepers, It's the Jaguaro!" of "The Scooby-Doo Show".
I don't know of an episode where all the gang becomes dogs, but there is an episode where Shaggy and Scooby swap minds ("Who's Scooby-Doo?", part of "The Scooby & Scrappy Doo Puppy Hour."
The first episode was "What a Night for a Knight".
There is a character called Mastermind, who wanted to take over the world, in the "New Scooby-Doo Mysteries" episode "Mission: Un-Doo-Able". There is also a video game character by that name in "Scooby-Doo! Night of 100 Frights."
The segment is called Laff-A-Munich
it is titled Toy Scary Boo, and it is an episode of What's New Scooby Doo.
in the movie scooby doo 1
The first episode of the Scooby-Doo franchise is "What a Night for a Knight" of "Scooby-Doo Where Are You!". It first aried September 13, 1969.