Slap Happy Lion is a 1947 American animated short film directed by Tex Avery and produced by Fred Quimby for Metro-Goldwyn-Mayer.

[3] Released on September 20, 1947, the short details the tragic downfall of a lion from king of the beasts to a gibbering, pill-popping wreck.

Circus), a hospital ward clerk hauls out a lion in a wheelchair who has had a nervous breakdown.

Watching this, a mouse expresses his disappointment about the lion being mouse-shocked and then talks about what happened before.

His loud roar frightens every last animal, including a gorilla, who screams, shrinks down in size, and runs off.

The mouse eventually walks away but mistakenly steps in the wrong direction—straight into the lion's mouth.

The lion tries to kill the mouse by lighting a bomb with a match, putting it in his mouth, and swallowing it.

When the lion runs to the lake to cool it down, the mouse pulls out a safety pin and pokes him in the rear.