A detection dog or sniffer dog is a dog that is trained to use its senses to detect substances such as explosives, illegal drugs, wildlife scat, currency, blood, and contraband electronics such as illicit mobile phones. The sense most used by detection dogs is smell. Hunting dogs that search for game, and search and rescue dogs that work to find missing humans are generally not considered detection dogs but fit instead under their own categories. There is some overlap, as in the case of cadaver dogs, trained to search for human remains.
Detection dog training in U.S. Navy military for drug detection
An English Springer Spaniel on duty as a detection dog with the British Transport Police at Waterloo station
Ukrainian sapper with a landmine finder dog Patron in Ukraine after battle during the 2022 Russian invasion
Knapweed Nightmare noxious weed detection dog wearing GPS tracking harness
An explosive is a reactive substance that contains a great amount of potential energy that can produce an explosion if released suddenly, usually accompanied by the production of light, heat, sound, and pressure. An explosive charge is a measured quantity of explosive material, which may either be composed solely of one ingredient or be a mixture containing at least two substances.
The Great Western Powder Company of Toledo, Ohio, a producer of explosives, seen in 1905
