A 155 year old mouse trap on display in a museum trapped a mouse that somehow got into the display. The trap design is actually very simple, yet very clever, and doesn't need to be reset like most modern traps. Diagram and better pictures in second link.
http://www.foxnews.com/science/2016/...?intcmp=hplnws
http://blogs.reading.ac.uk/merl/2016...an-mouse-trap/
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