|This needs a stretch.|
The giant bat lived with other, normal-sized bats in Badcarl's Cavern.
The Richie Rich/Scooby-Doo Show
When Shaggy Rogers, Scooby-Doo, and Scrappy-Doo were running from Rock Monsters in the caverns when they disturbed it. It chased them until Scrappy jumped on its back and rode it to exhaustion. (Scooby At The Center Of The World)