A CANINE SNIFF OF A PERSON IS A SEARCH AND REQUIRES PROBABLE CAUSE TO BELIEVE THE SUBJECT HAS COMMITTED A CRIME, THEREBY TRIGGERING THE NECESSITY FOR A SEARCH WARRANT OR AN EXCEPTION TO THE WARRANT REQUIREMENT (THIRD DEPT). ​

The Third Department, reversing County Court and remitting the matter, in a full-fledged opinion by Justice Ceresia, determined probable cause to believe a crime has been committed is the proper standard for a canine sniff of a person. Here defendant was asked to step out of his vehicle. The canine put his nose in defendant’s groin/buttocks area and alerted for the presence of narcotics:

… [A] canine sniff of the body is far more intrusive than that of a vehicle exterior or common hallway, and an individual has a correspondingly greater expectation of privacy in one’s own body than in those settings. Indeed, when it comes to canine sniff searches, it would be difficult to imagine one more intrusive or involving a more significant privacy right than the one at issue here. Accordingly, we conclude that the serious “intrusion on personal privacy, security, and dignity” that accompanies a canine sniff of the body can only be justified at DeBour level 4 — namely, upon probable cause to believe that the target of the sniff search has committed a crime … .

… [G]iven the fact that County Court only evaluated the evidence under the lesser standard of reasonable suspicion, we are constrained to remit this case to that court for a determination of whether the police had probable cause to perform the canine sniff search of defendant’s body …thereby triggering the necessity of either a search warrant or an exception to the warrant requirement … .  People v Butler, 2025 NY Slip Op 04052, Third Dept 7-3-25

Practice Point: It is hard to believe the law on this topic is just now being settled. A canine sniff of a person is a search requiring probable cause to believe the subject has committed a crime, thereby triggering the necessity for a search warrant or an exception to the warrant requirement.