The English police have hired a sniffer dog trained to smell the seminal fluid.

The Cheshire County Police have hired a sniffer dog trained to smell semen. Labrador named April will help investigate rape and other sexual crimes. A dog can smell 0.016 milliliters of seminal fluid even if it was left at the crime scene years ago. April's training lasted six weeks. The dog has already started his first case - he was called to the scene of another crime 36 hours after being hired.