- Al Hallet - Resident
- Arthur Millet - Resident
- Charles A. Bachman - Police Officer
- Charles Meakin - Resident
- Charley Chase - Inebriate
- Charley Young - Motorist
- Dorothy Vernon - Family Friend
- Harry Arras - Resident
- Jack Hanlon - Neighborhood Kid
- Jack Hill - Man With Monocle
- William Courtwright - Cement Worker
Plot: Joe Cobb's mother operates a fireworks stand which gives the gang access to all sorts of pranks. Farina is content with just popping shopping bags until a neighborhood kid gives him a quarter to take Pansy off his hands. Farina uses it to buy a sky-rocket which Joe launches and ends up touching down right into the middle of the stand and launching a major explosion of fireworks. The gang flees to the scene of a scientist who has created Bahama-Oil capsules a thousand times more powerful than nitroglycerine. Pansy eats several of the capsules and everyone runs from him, terrified that he will explode, and the Rascals and then the townsfolk repeatedly track up the same patch of fresh cement to the frustration of the man who laid it. Instead, the dog coughs the capsules up one at a time creating mini-explosions everywhere he goes, and the crazed cement layer ends up playing pattycake with the ruined cement.
- "You sure started a conflagration!" - Joe to Farina
- "- You fellows want a dog? - His name is Pansy -" - Jack Hanlon
- "-- My old man has opened many a bank - " - Jay R. Smith
- The sub-plot with Joe Cobb not allowing Farina to set off his own rocket is recreated in Two Too Young.
- This short with Pansy having swallowed the nitroglycerine might have inspired "The Loaded Goat" episode of The Andy Griffith Show.