The puzzling scene was happened upon by a worker who queried the presence of the rodent after finding it wasn't recorded in the museum's database.
Staff at the Museum of English Rural Life, University Of Reading, quickly discovered that despite the historic trap being unbaited, the mouse had somehow ferreted its way into it and suffered an agonizing death.
Intriguingly, the trap was among exhibits to be fully glazed last year to protect it from the elements - and roaming rodents - puzzling museum experts as to how the mouse managed to get in.
The Colin Pullinger 'Perpetual' trap was heralded at the time for its simplicity and effectiveness, after having its unique design registered in 1861.
CLICK HERE to see photos of this trap.
Source: Huffington Post