Police dogs trained to detect drugs can be used:

Question

Quizplus · Accepted Answer

Police dogs trained to detect drugs may accompany a police officer to any public place the officer legally goes. This is based on the use of the dog being considered a "suspicionless search" rather than a search incident to an arrest or authorized by a search warrant. However, it should be noted that there are limitations to the use of drug-sniffing dogs, and their use must be reasonable and not violate an individual's Fourth Amendment rights.

Police Dogs Trained to Detect Drugs Can Be Used