An article on handler cueing of bomb and drug dogs that appeared in the scientific journal, Animal Cognition, has caused quite a stir in the world of law enforcement canine handlers, as well as among criminal lawyers. The article, Handler Beliefs Affect Scent Detection Dog Outcomes, was written by three researchers at the University of California at Davis, Lisa Lit, Julie B. Schweitzer, and Anita M. Oberbauer. L.E. Papet and I have written a paper discussing this research, as well as the law that has developed on cueing issues in criminal prosecutions. The article, Cueing and Probable Cause, is posted on the website of the Michigan State University College of Law.
Also, see our article, How to Prevent Cueing Arguments from Getting Canine Evidence Thrown Out in Court, which appeared in Deputy and Court Officer, 3(2),36-38 (2011).