At the end of the movie, Lady and Tramp have 4 puppies. Three are girls who look just like Lady, and one is a boy who looks just like Tramp.

Tramp finds a beaver at the local zoo who can remove Lady's muzzle.

When Tramp hears Lady's frantic barking, he rushes into the house and corners the rat in the nursery.

Peggy Lee also provided voices for Darling and the Siamese cats, co-wrote all the film's songs, and sang four of them, including "He's a Tramp".

Tramp, being a stray, is not attached to any family. On Mondays, he visits a German family, who call him Fritzie. On Tuesdays, he visits an Irish family, who call him Mikey. He also visits Tony and Joe, who call him Butch.

When Tramp is captured, Jock and Trusty chase after the dog catcher's wagon. They manage to scare the horses, causing the wagon to crash. Jim Dear arrives in a taxi with Lady, and she reunites with Tramp, but their joy is short-lived when they find Trusty pinned underneath the wagon's wheel, motionless, with Jock howling mournfully.

Si and Am are identical seal-point Siamese cats.

The movie cost $4 million to make. During its initial run, it earned $6.5 million in domestic box office, making it the studio's biggest hit since Snow White and the Seven Dwarfs.

After he is taken in by Jim Dear and Darling, Tramp wears a red collar with a diamond shaped license.

Tramp calls Lady Pidge (short for pigeon) possibly because he believes there's a little bit of bird dog in all of us.