None of this is NEWS, ALL Field Tests are Wrong 80% of the Time, Drug sniffing dogs are wrong most of the time too. There are many many double blind tests that have been done to demonstrate this. And since the POLICE KNOW about the Fallacy, I cut them NO SLACK and the Jack Booted Thugs belong in PRISON FOR LIFE for the FELONY KIDNAPPING AND EXTORTION.
A dog will alert to a ham sandwich.
The dogs may make mistakes, but the handlers don't. I've heard that a lot of dogs are trained to "hit" on subtle cues from their handler. So if they want an excuse to give you a hard time, the dog will "hit" on you or your car and out comes the Vaseline & gloves, and your car gets taken apart while you are detained. Later it will be determined the dog made a mistake...
Usually the cops bring back up coke to plant on the “perp.”