The nose knows: how detector dogs work  It’s all in the nose for
detector dogs, but how they work and why they’re so good at it
are essential to the military, transportation and other sectors
that must defend against unseen threats.  Dogs, like humans,
have an areas of the brain that processes all kinds of sensory
input – sights, sounds, smells – but their noses are longer and
more spacious, making them masters at inhaling odors. They have
between 20 and 40 times more odor receptors in their snouts than
people, which means that in most cases they can detect an odor
at much lower concentrations than humans.  ag sniffing beagle
Detection dogs, including bomb sniffers, are typically trained
to sense for one type of agent, such as explosives, narcotics,
insects or even contraband food or plants. While military
working dogs are typically bred for purpose, this is not the
case with all types of detection dogs. For example, earlier this
year two beagles were rescued from a shelter and have since been
trained to det