Police dogs have been used since the 19th century - one WWI German defector became a major movie star. But in the US the post-9/11 era has seen a K9 unit boom and questions and concerns have increased as well.
- US Supreme Court Says Drug Sniffing Dogs Don't Need Proven Track Record
- Police Dog Killed By Robber Inspires New Law
- Demand, Public and Private, Booms for Dogs to Sniff Out Security Threats
- Police K9 Unit in Dog Fight with Critics
- How Reliable Are Sniffing Dogs?
- How Even a 'Well-Trained Narcotics Detection Dog' Can Be Wrong 84 Percent of the Time
- How Police Dogs Work