Trivia: Although the spaghetti-eating sequence is now the best known scene, Walt Disney originally did not want it in the film as he thought it would not be romantic and that two dogs eating spaghetti would look ridiculous. Animator Frank Thomas was against Walt's decision and animated the entire scene himself without any lay-outs. Walt was so impressed with Thomas's work he decided to keep the scene in.
Trivia: One of the filmmakers suggested introducing a newborn baby in the story because he had just had a baby, and thought it was interesting to watch his own dog react to a new baby in the house.
Boris: Ah, but remember, my friends. Even Tramp has his Achilles heel.
Pedro: Pardon me, amigo. What is this chili deal?
Boris: Achilles heel, Pedro. This is meaning his, uh, weaknesses.
Toughy: Oh! Oh, the dames. Yeah.
Bulldog in Pound: He has an eye for a well-turned paw, he has. Let's see, there's been Lulu.
Toughy: Yeah, and Trixie.
Dachsie: Und Fifi.
Pedro: And my sister, Rosita Chiquita Juanita Chihuahua. I think.
Tony: Hey, Joe! Look! Butch-a, he's got a new girlfriend.
Joe: Well, a-son of a gun! He's a got a cockerel Spanish-a girl.
Tony: Hey, she's pretty sweet kiddo, Butch. You take-a Tony's advice and settle down with this-a one, eh? Hehehe.
Lady: "This-a one"?
Tramp: This-a one... this-a... Oh! Tony, you know. He's-a not-a speak-a English-a pretty good.