The document discusses drug detector dogs used by Finnish Customs. It notes that while any breed can be trained, most are Labrador Retrievers due to reliable information on their effectiveness. Dogs are selected for traits like health, social skills, energy level, courage, cooperation and fitness. They undergo training from puppyhood with their handler and are tested at age one for suitability. If selected, they receive three months of basic training at the Customs Dog Training Centre and annual refresher training during their approximately seven-year careers. The dogs live with their handlers as family pets, detecting drugs and other illegal goods at borders and other locations to help Customs protect society.