Sabotage Via Rodentia

British Secret Service instructions from World War II on how to make an explosive rat:

A rat is skinned, the skin being sewn up and filled with P.E. to assume the shape of a dead rat. A Standard No. 6 is set in the P.E. Initiation is by means of a short length of safety fuse with a No. 27 detonator crimped on one end, and a copper tube igniter on the other end, or, as in the case of the illustration above, a P.T.P. with a No. 27 detonator attached. The rat is then left amongst the coal beside a boiler and the flames ignite the safety fuse when the rat is thrown on to the fire, or as in the case of the P.T.P. a Time Delay is used.

Explosive Rat [Hall of Documentation Weirdness]