Scientists took a group of University of California at Berkeley undergraduates, showed them a video of canine scent-tracking, and then took them out on a lawn that had been laced with essential oil of chocolate. Scientists gave the students blindfolds, thick gloves, knee and elbow pads, and let them loose, off-lead. Could they track the chocolate using their noses, crawling on their hands and knees? Absolutely. The track they followed looked like the zigzag of a dog’s trail.
— Read more at Cadaver dogs and chocolate-sniffing students at The Irish Times.