What was the name of the pet mouse in "The Green Mile"?

The pet mouse in The Green Mile was named Mr. Jingles.

Mr. Jingles belongs to Eduard Delacroix, a death-row inmate at Cold Mountain Penitentiary. Delacroix trains the small mouse to perform tricks, including pushing a spool across the floor. The animal becomes a source of comfort and companionship in the harsh prison environment.

The mouse is also central to the story's supernatural elements. John Coffey, a gentle prisoner with extraordinary healing abilities, brings Mr. Jingles back to life after Percy Wetmore cruelly stomps on him. This scene helps establish Coffey's powers before the story's larger tragedy unfolds.

Mr. Jingles appears in both Stephen King's 1996 novel and the 1999 film adaptation. In the film, the mouse is portrayed by several trained mice, with visual effects assisting some scenes. The character is sometimes confused with a generic prison mouse, but Mr. Jingles is the specific name given to Delacroix's pet.