From the Sydney Australian

A squad of newly trained police dogs in Victoria, Australia, have been taken out of service after handlers discovered a training problem. The dogs had been taught to track cocaine checked out of police evidence lockers, but only after training did police realize that someone had stolen the real cocaine before they got there and replaced it with talcum powder. In tests, the dogs ignored real cocaine "but showed unusual prowess in tracking baby powder." Police are now trying to figure out who stole the drugs.