Starring: Tom Kenny, Carlos Alazraqui, Charles Adler, Charlie Adler, Mr. Lawrence
Continuity mistake: Ralph's hair color changes from yellow on the tile card to purple in the episode.
Continuity mistake: Near the end when Ralph is at the Bigheads' 30th anniversary, Ralph slams half of the donut on the table near Ed. Then Ed pulls out his half of the donut and Ralph comes over and somehow has the other half without picking it up off the table.
Gladys the Big Hippo Lady: How dare you.
Zanzibar! / Fatal Contraption - S3-E13
Trivia: During the spring cleaning music number, there is an older goat who pulls a rat out of a couch, wondering where it came from. At the bottom of the frame is a dead mouse in a mouse trap. It's Mickey Mouse.