Sniffer sniffer A man had just settled into his seat next to the window on the plane when another man sat down in the aisle seat and put his black Labrador Retriever in the middle seat next to the man. The first man looked very quizzically at the dog and asked why the dog was allowed on the plane. The second man explained that he was from the Police Drugs Enforcement Agency and that the dog was a 'sniffing dog'. 'His name is Sniffer and he's the best there is. I'll show you once we get airborne,…