The Flying Mouse is a Silly Symphonies cartoon produced by Walt Disney, directed by David Hand, and released to theatres by United Artists on July 14, 1934.
To the tune "I Would Like to Be a Bird", a young mouse fashions wings from a pair of leaves, to the great amusement of his brothers.
When his attempts to use them fail, the mouse got blown backwards and his rear end crashes into a thorn, he falls into the tub and shrinks his sister's dress and gets spanked by his mother.
The short was released on December 4, 2001, on Walt Disney Treasures: Silly Symphonies - The Historic Musical Animated Classics.
[2][1] Prior to that, the featurette also appeared on the Walt Disney Cartoon Classics Limited Gold Edition: Silly Symphonies VHS in the 1980s.