Scientists have found a better way to train bomb-sniffing dogs. A study published earlier this year, led by researchers at the University of Lincoln in the UK, and funded by the US Office of Naval Research, showed that dogs can be trained identify categories of smells. It’s a revolutionary way to look at the way dogs learn, and could make bomb-sniffing dogs even more amazing. Currently, bomb-sniffing dogs are trained to identify unique scents. But dogs trained to understand categories of smells instead could be able to identify explosives that they’ve never encountered before. Watch the video to learn more.