Detection dogs and other variations
There are several types of working dogs. Including, the detection dog, which is a dog trained to and works at using its senses (almost always the sense of smell) to detect substances such as explosives or illegal drugs.
Hunting dogs that search for game and search dogs that search for missing humans are generally not considered detection dogs. There is some overlap in cases like cadaver dogs that detect human remains. There are other types including the danger dog, war dog and pariah dog.
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