When does Snooper and Blabber return?

Snooper and Blabber form a pair of cat and mouse detectives, respectively, working for the Super Snooper Detective Agency. Snooper's voice was patterned after Ed Gardner's Archie on the 1940s radio show Duffy's Tavern. The characters have appeared in other Hanna-Barbera cartoons, including Scooby's All-Star Laff-A-Lympics.