Police in Columbia are training rats to sniff out landmines.
Lola the rat has a ninety percent success rate in locating explosive material in her training maze. Soon she will be working out in the field (literally).
Police say rats are much smarter than dogs and can be trained in half the time (three months instead of six). Rats are light enough to stand on a landmine without setting it off, unlike dogs and people.
The original news story is no longer available at Reuters. But another account can found at The Telegraph and this also describes how rats are being used to detect tuberculosis in human saliva samples.