The jail service is appealing to breeders to double the numbers of sniffer dogs. Officers train the dogs to sniff out banned materials, whether they are drugs or mobile phones, and the Scottish Prison Service is now asking Labrador and Spaniel breeders to nominate their pups. It is likely the number of dogs required will go up from 12 to 28. When it is time to retire the usual practice is for the dogs to become family pets.