Of the hundreds of recognised dog breeds, the Belgian malinois has been named as the world's most intelligent by a new scientific study. Belgian malinois, often used as police dogs, achieved 35 points out of 39 in a series of cognitive tasks and behavioural tasks as part of the study. Naturally, the new study, conducted at the the University of Helsinki in Finland, has begged the question: which dog breed is the dumbest? According to Professor Stanley Coren, a canine expert at the University of British Columbia in Canada, the Afghan Hound is the least intelligent breed of dog when it comes to understanding and obeying commands. The following were ranked lowest by Professor Stanley Coren in his book'The Intelligence of Dogs'.