Drug sniffing dogs aren't accurate. You might as well allow the cop to flip a coin and if it comes up heads he has probable cause to search the vehicle. Combine

Drug sniffing dogs aren't accurate. You might as well allow the cop to flip a coin and if it comes up heads he has probable cause to search the vehicle. Combine that with civil asset forfeiture laws and you have a nasty incentive. Cops have been caught giving their dogs signals to bark so they can seize the car.