A professional dog is a dog that performs a special or professional role. There are many kinds of professional dogs.

 First of all, Polly, the nation's first fire detection dog is a male retriever that detects flammable substances in the field.

 Second, Jasper, the life-saving dog among the strongest special dogs ever, is a female malinoise that is responsible searching for a missing person or detecting a dead body.

 Finally, Bio, the national dog of the Korea, is a male malinoise that assists other dogs in training and detects explosives.

 Like this, there are many dogs sacrifice them selves and bravely save people in Korea.