Drug Sniffing Dogs: "A Day in the Life of Chopper" ~ 1970 US Customs Service

more at http://quickfound.net/

'Covers the training and care of a dog used by the U.S. Customs Service to sniff out concealed narcotics.'

Originally a public domain film from the National Archives, slightly cropped to remove uneven edges, with the aspect ratio corrected, and one-pass brightness-contrast-color correction & mild video noise reduction applied.

The soundtrack was also processed with volume normalization, noise reduction, clipping reduction, and/or equalization (the resulting sound, though not perfect, is far less noisy than the original).

https://en.wikipedia.org/wiki/Detection_dog

Wikipedia license: http://creativecommons.org/licenses/by-sa/3.0/

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 dogs that work to find missing humans are generally not considered detection dogs. There is some overlap, as in the case of cadaver dogs, trained to search for human remains. A police dog is essentially a detection dog that is used as a resource for police in specific scenarios such as conducting drug raids, finding missing criminals, and locating stashed currency.

Frequently, detection dogs are thought to be used for law enforcement purposes; however, they are also used as a valuable research tool for wildlife biologists. In California, detection dogs are trained to discover quagga mussels on boats at public boat ramps because they are a harmful invasive species for the environment. Detection dogs also tend to be employed for the purposes of finding and collecting the feces of a diverse array of species, including caribou, black-footed ferret, killer whale, and Oregon spotted frog. This process is known as wildlife scat detection.

Detection dogs are also seeing use in the medical industry, as studies have revealed that canines are able to detect specific odours associated with numerous medical conditions, such as cancer...

https://en.wikipedia.org/wiki/Police_dog

A police dog, known in some English-speaking countries as a "K-9" or "K9" (a homophone of "canine"), is a dog that is specifically trained to assist police and other law-enforcement personnel. Their duties include: searching for drugs and explosives, locating missing people, finding crime scene evidence, and attacking people targeted by the police. Police dogs must remember several verbal cues and hand gestures. The most commonly used breeds are the German Shepherd Dog, Belgian Malinois, Bloodhound, Dutch Shepherd, and Retriever breeds. Recently, the Belgian Malinois has become the dog of choice for police and military work due to their intense drive and focus. Malinois are smaller and more agile than German Shepherd Dogs, and have fewer health issues. However, a well-bred working line German Shepherd Dog is just as successful and robust as a Malinois

In many countries, the intentional injuring or killing of a police dog is a criminal offence...

Detection or explosive dogs – Some dogs are used to detect illicit substances such as drugs or explosives which may be carried on a person or in their effects. Many police dogs are trained to detect marijuana, heroin, cocaine, crack cocaine, and methamphetamines...