In case you were counting, during the final battle scene, Groucho wears five different uniforms: A Union soldier's uniform, a Confederate general's uniform, a boy scout troop leader's uniform, a Revolutionary War-era British general's uniform, and a Davey Crockett outfit. That is, just in case you were counting...

And just in case you were trying to tell who is who in the mirror sequence, good luck. The physical similarities between Chico, Harpo, and Groucho, (and even Zeppo, even though he isn't in this sequence), make it nearly impossible to tell who is the real Groucho in the scene. Go ahead and try. We dare you...

By the time Duck Soup was in production, Harpo Marx was the critical darling of the intellectual community, particularly around the famed "Algonquin Round Table" in New York City, made up of several of the notable literati of the day, like Dorothy Parker and Robert Benchley. Alexander Woolcott considered Harpo to be the greatest pantomime since Charles Chaplin. Always considered to be the most congenial Marx brother, Harpo nevertheless let the attention go to his head, just a bit. One day on the set, Harpo, in an unusually pretentious gesture, asked producer Herman Mankiewicz to explain the motivation of his character. (As if Harpo was playing anyone else but Harpo...) Mankiewicz, the brilliant writer who in only a few years would co-write Citizen Kane (1941), replied, "You're a middle-aged Jew who goes around picking up sh**."

The surprising sight gag of the live dog barking out of a tattooed doghouse on Harpo's arm was originally a little different. Possibly because of censorship reasons, the sight gag was changed from a tattoo of an outhouse on Harpo's chest, whereupon Groucho slaps him on the back, causing the door of the outhouse to swing open and a little hand to reach out and shut it again.

Famous Quotes from DUCK SOUP

Rufus T. Firefly: I got a good mind to join a club and beat you over the head with it.

Rufus T. Firefly: I'd be unworthy of the high trust that's been placed in me if I didn't do everything in my power to keep our beloved Freedonia in peace with the world. I'd be only too happy to meet with Ambassador Trentino, and offer him on behalf of my country the right hand of good fellowship. And I feel sure he will accept this gesture in the spirit of which it is offered. But suppose he doesn't. A fine thing that'll be. I hold out my hand and he refuses to accept. That'll add a lot to my prestige, won't it? Me, the head of a country, snubbed by a foreign ambassador. Who does he think he is, that he can come here, and make a sap of me in front of all my people? Think of it - I hold out my hand and that hyena refuses to accept. Why, the cheap ball-pushing swine, he'll never get away with it I tell you, he'll never get away with it!
(Trentino enters) "So, you refuse to shake hands with me, eh? (he slaps Trentino with his glove).

Bob Rolland: Trentino is a very sensitive man. Why I told him something once and he slapped my face!
Rufus T. Firefly: What did you tell him?
(Rolland whispers it in his ear. Firefly gasps and slaps him)
Rufus T. Firefly: You ought to be ashamed of yourself. Who told you that?
Bob Rolland: Why, you did.

Rufus T. Firefly: You're a brave man. Go and break through the lines. And remember, while you're out there risking you're life and limb through shot and shell, we'll be in be in here thinking what a sap you are.

Rufus T. Firefly: He may look like an idiot, and talk like an idiot, but don't let that fool you. He really is idiot.

Rufus T. Firefly: But there must be a war. I've paid a month's rent on the battlefield.

Rufus T. Firefly: We're fighting for this woman's honor, which is more than she ever did.

Chicolini: Now I aska you one. What has a trunk, but no key, weighs 2,000 pounds and lives in a circus?
Prosecutor: That's irrelevant.
Chicolini: Irrelephant? Hey, that'sa the answer! There's a whole lot of irrelephants in the circus.

Rufus T. Firefly: I suggest we give him ten years in Leavenworth, or eleven years in Twelveworth.
Chicolini: I tell you what I'll do. I'll take five and ten at Woolworth.

Rufus T. Firefly: Excuse me while I brush the crumbs out of my bed. I'm expecting company.

Rufus T. Firefly: Well, that covers a lot of ground. Say, you cover a lot of ground yourself. You better beat it -- I hear they're going to tear you down and put up an office building where you're standing. You can leave in a taxi. If you can't get a taxi, you can leave in a huff. If that's too soon, you can leave in a minute and a huff. You know, you haven't stopped talking since I came here? You must have been vaccinated with a phonograph needle.

Minister of Finance: Here is the Treasury Department's report, sir. I hope you'll find it clear.
Rufus T. Firefly: Clear? Huh! Why a four-year-old child could understand this report!
(To Bob Roland) "Run out and find me a four-year -old child, I can't make head or tail of it."