Police Dogs and Their Noses

“New South Wales police officers have carried out 14,102 searches on people as a result of a sniffer dog indicating the presence of an illegal drug . . . Of those searches, illicit substances were not found on 11,248 occasions – that means four out of five times the dogs are getting it wrong.”
Read the article: http://www.abc.net.au/news/2011-12-12/accuracy-of-police-sniffer-dogs-called-into-question/3726228