Episode Title:
Zoinks the Wonderdog
Episode Description:
When Shaggy's old dog Zoinks returns, Scooby begins to become jealous of him, and finds his previous owner Groovy Don. Little do they realize, both Zoinks and Groovy Don were created by Phibes to split Shaggy and Scooby, causing them to find the true meaning of friendship when Zoinks and Groovy Don attack them.